AKD4184A-A AKM | Alldatasheet
Document overview
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Technical content
configured GPIO pin as input, LEDs for GPIO Output Circuits and LED Driver with dimmer control.
- 4-wire resistive Touch Screen Controller I/F
- 6 x 5 Matrix Keypad I/F
- 10pin header and 25pin D-sub connector for serial control interface
- LED dimmer control
- GPIO function AK7953 (LED Driver) Control Port D-sub 25Pin AK4184 AVDD 1035 IOVDD Digital I/F 2 10Pin Header 1035 GND Touch Screen 8Pin Header Keypad 6 x 5 GPIO
8 Port
Figure 1. AKD4184A Block Diagram
- Circuit diagram and PCB layout are attached at the end of this manual.
Figure 2. AKD4184A-A Outline Chart Connector for the 4-wire touch panel connection; Match and connect the pins of the panel with these connectors. When JP 9-16 are set to “IN", “L" or “H" is input to the AK4184A GPIO 0-7pin by S1. When JP 9-16 are set to “OUT", the status of the AK4184A GPIO 0-7pin can be confirmed with LED of GP 0-7. Connect power supply to these pins. directly to the XP pin and the YP pin. LED is lit by the PWM signal for controlling the brightness from AK4184A. Control port; Please connect it with PC with D-sub parallel cable. Keypad scanner function of the AK4184A can be evaluated.
[AKD4184A-A] Operation sequence (1) Set up the power supply lines. Set up the jumper pins. JP4 IOVDD_SEL (Open) JP3 VCC_SEL (Short) JP2 LEDVIN_SEL (Open) Set up the power supply lines. Name Color Voltage Comments AVDD Orange +2.5∼+3.6V(typ3.3V) Power supply for AVDD of AK4184A. IOVDD Orange +1.6∼+3.6V(typ3.3V) Power supply for IOVDD of AK4184A. *IOVDD should be less than AVDD. IFVCC Red +1.2∼+3.6V(typ3.3V) Power supply for Digital logic circuits. LEDVIN Red +2.8∼+5.5V(typ3.3V) Power supply for VDD of AK7953. AGND Black 0V Analog GND. DGND Black 0V Digital GND. Table 1 Set up of power supply lines * Each supply line should be distributed from the power supply unit. (2) Set up the evaluation mode, jumper pi ns and DIP switches. (See the followings.) (3) Power on. The AK4184A should be resets once bringing SW31 “L” upon power-up. <KM093500> 2008/03 - 3 -
(1) Touch-position and touch-pressure measurement. (4) LED dimmer control function. (1) Touch-position and touch-pressure measurement. manual. As for the AK4184A’s register definitions, refer to datasheet of the AK4184A. 4-wire resistive touch screen should be connected to J1. The pin assignment of J1 is shown on Table 2.
2 YN Touch Screen Y – plate Voltage supply
4 YP Touch Screen Y + plate Voltage supply
6 XN Touch Screen X – plate Voltage supply
8 XP Touch Screen X + plate Voltage supply
Table 2. J1 (8P Header) pin assign The AK4184A’s register (Touch Screen Register) should be set to Touch Screen Operation.
[AKD4184A-A] Set up the jumper pins. JP9 GP0 IN OUT JP10 GP1 JP11 GP2 JP12 GP3 JP13 GP4 JP14 GP5 JP15 GP6 JP16 GP7 The AK4184A’s register (GPIO Pin Direction Register) should be set GPIO pins as input. Select “L” or “H” on S1, the AK4184A’s register should be read from the Pin Level Register. The pin state is detected. (3-2) GPIO pin as output port AKD4184A evaluates GPIO control function with LED (GP0~GP7). Set up the jumper pins. JP9 GP0 IN OUT JP10 GP1 JP11 GP2 JP12 GP3 JP13 GP4 JP14 GP5 JP15 GP6 JP16 GP7 JP20 PULL_UP (Open) JP19 LED_EN (Open) The AK4184A’s register (GPIO Pin Direction Register) should be set GPIO pins as output. The AK4184A’s register (GPIO Pin Set/Clear Register) should be set pin level to “H”. Therefore, LED (GP0~GP7) turns on. (4) LED dimmer control function. AKD4184A evaluates LED dimmer control on LED9 and LED10. Set up the jumper pin. JP18 PWM (Short) The AK4184A’s register (PWM Control Register) should be set to power up. The AK4184A’s register should be changed by Bright Control Value. Therefore, LED9 and LED10 dimmer is controlled. <KM093500> 2008/03 - 6 -
[AKD4184A-A] Other jumper pins set up [JP1] (GND) : Analog ground and Digital ground OPEN: Separated. SHORT: Common. (The connector “DGND” can be open.) <Default> [JP2] (IOVDD_SEL): IOVDD of the AK4184A OPEN: IOVDD is supplied from “IOVDD” jack. <Default> SHORT: Supplied from “AVDD” (“ IOVDD” jack should be open). [JP3] (VCC_SEL): Logic block is selected supply line OPEN: VCC is supplied from “VCC” jack. SHORT: Supplied from “IOVDD” (“VCC” jack should be open). <Default> [JP4] (LEDVIN_SEL): VIN of the AK7953 OPEN: LEDVIN is supplied from “LEDVIN” jack. <Default> SHORT: Supplied from “IFVCC” (“LEDVIN” jack should be open). [JP5] (XP_SEL): Connect XP of the AK4184A TSC: Connect the Touch Screen to J1. <Default> AIN: Analog signal is input from J2. [JP6] (YP_SEL): Connect YP of the AK4184A TSC: Connect the Touch Screen to J1. <Default> AIN: Analog signal is input from J3. [JP7] (XN_SEL): Connect XN of the AK4184A TSC: Connect the Touch Screen to J1. <Default> GND: Connect the GND. [JP8] (YN_SEL): Connect YN of the AK4184A TSC: Connect the Touch Screen to J1. <Default> AIN: Analog signal is input from J2. GND: Connect the GND. [JP17] (AIN_SEL): J2 signal input XP: Analog signal is input to XP. <Default> YN: Analog signal is input to YN. [JP18] (PWM): Indication for White LEDs OPEN: Disable. SHORT: Enable. <Default> [JP19] (LED_EN): Indication for GPO LEDs OPEN: Enable. SHORT: Disable. <Default> [JP20] (PULL_UP): GPO Pull-up register OPEN: Don’t use. SHORT: Use pull-up register. <Default> [JP21] (DOUT_PD): DOUT Pull-down register OPEN: Don’t use. SHORT: Use pull-down register. <Default> <KM093500> 2008/03 - 7 -
[AKD4184A-A] The function of the toggle SW *Upper-side is “H” and lower-side is “L”. [SW31] (RESETN): Power down of AK4184A. Keep “H” during normal operation. Indication for LED [LED1~8] (GP0~7): Monitor GP0~7 pin of the AK4184A. LEDs turn on when GP0~7 pin is “H” level. [LED9, 10]: Monitor BRCONT pin for the AK4184A. LED turns on when LED controller power up. Serial Control The AKD4184A can be connected via the printer port (parallel port) of IBM-AT compatible PC. Connect PORT1 (CTRL) with PC by D-sub 25pin parallel cable. <KM093500> 2008/03 - 8 -
Figure 7. GPIO Input/Output Circuits ∗ AKEMD assumes no responsibility for the trouble when using the above circuit examples.
- Set up the AKD4184A board.
- Connect IBM-AT compatible PC with AKD4184A by printer cable (D-sub 25pin). (Please install the driver from the
Software Driver by AKM device control software”. In case of Windows95/98/ME, this installation is not needed.
- The AK4184A should be resets once bringing SW31 “L” upon power-up.
- Insert the CD-ROM labeled “AK4184A Evaluation Kit” into the CD-ROM drive.
- Access the CD-ROM drive and double-click the icon of “AKD4184A.exe” to set up the control program.
- Then evaluate according to the follows.
When runs the control program, the window as shown in Figure 8 opens. Figure 8. Control Soft window
[AKD4184A-A] 1. Touch-position and touch-pressure measurement ɾ[TP START]: When select “Touch Screen Functi on” and click [TP START] button with pressing point by the status or finger. The number of measurement is set by “AD Cycle/mea” box, and then display measurement results at “AD OUT Section”. Display all data on an assistant window. The parameter on the “Touch Screen function” corresponds to A1-0 bits and PD bit of the AK4184A’s register (Touch Screen Command). <Example ʵ Touch-position measurement> a. Select “DFR X-axis” from drop-down list of “1st Measurement”. Check the box of “1st PD”. b. Select “DFR Y-axis” from drop-down list of “2nd Measurement”. Check the box of “2nd PD”. c. Select “16” from drop-down list of “AD Cycle/mea”. d. Click [TP START] button with touching any position on Touch Screen, then start the measurement. e. Display MEAN, MAX, MIN and SIGMA from 16 times of measurement results “AD OUT Section”. (Left: X-axis measurement results, Right: Y-axis measurement results) The results are displayed in decimal, and maximum value is “4095”. Display data on sub window. Line up X-axis data at first, next is Y-axis. 2. Keypad scan ɾ[Write KEY Control]: Select drop-down list of “KEYSTS1..0”, “Debounce Time” and “Keypad Hold Time”, then click [Write KEY Control] button. “KEYSTS1..0”, “Debounce Time” and “Keypad Hold Time” corresponds to KST1-0 bits, DBN2-0 bits and HLD2-0 bits of the AK4184A’s register (Keypad Control Register). ɾ[Read KEY Control]: Read current “Keypad Control Register” setting, then display it in “Page”, “Addr” and “Data”. ɾ[Key Scan]: When select “11” from drop-down list of “KEYSTS1..0” and click [Key Scan] button, initiate Keypad scan by Host instruction. ɾ[Write Column mask]: Check the box of “C1” – “C6”, mask the column which checked. ɾ[Write Key mask]: Check the box of “KM1” – “KM30”, mask the key which checked. ɾ[Read KPDATA1]: Read “Keypad Data Register 1” (Addr 00h), then display it in “Data” and virtual keys. (Don’t display keys masked in “Write Column mask”.) ɾ[Read KPDATA2]: Read “Keypad Data Register 2” (Addr 01h), then display it in “Data” and virtual keys. (Don’t display keys masked in “Write Column mask” and “Write Key mask”.) <Example ʵ Host Scan> a. Select “11: Manual Key Scan initiate by Host Scan command” from drop-down list of “KEYSTS1..0”. b. Select “000: 1msec” from drop-down list of “Debounce Time”. c. Select “000: 100us” from drop-down list of “Keypad Hold Time”. Click [Write KEY Control] button. d. Click [Key Scan] button while pushing any key of SW1 – SW30 on AKD4184A. e. When click “Read KPDATA1” or “Read KPDATA2” button, display the key status on the screen. <Example ʵ Key Touch Scan> a. Select “10: Auto Key Scan initiate by Key Touch” from drop-down list of “KEYSTS1..0”. b. Select “000: 1msec” from drop-down list of “Debounce Time”. c. Select “000: 100us” from drop-down list of “Keypad Hold Time”. Click [Write KEY Control] button. d. Push any key of SW1 – SW30 on AKD4184A. e. When click “Read KPDATA1” or “Read KPDATA2” button, display the key status on the screen. * If you check the box, data becomes “H” or “1”. If not, “L” or “0”. <KM093500> 2008/03 - 12 -
When click [OPEN GPIO] button on the main window, the window as shown in Figure 9 opens. Figure 9. [GPIO Dialog] window GPPS)] corresponds to “GPIO Pin State Register” of the AK4184A’s register. Register” of the AK4184A’s register. a. Set the jumper pins of JP9~JP16 (GP0~GP7) to become “IN”. c. Set the DIP SW (S1) to become either “H” or “L”. d. Click [Read] button of “Pin Level (PAGE0, GPLR)”. e. Display the input level in “Pin Level”.
[AKD4184A-A] < Example ʵ GPIO Output > a. Set the jumper pins of JP9~JP16 (GP0~GP7) to become “OUT”, and JP19, JP20 is “Open”. b. Check the box of “Direction” (GP0~GP7) to become “Output”, and click [Write] button of “Pin DIR (PAGE1, GPDIR)”. c. Check the box of “Pin Set/Clear” (GP0~GP7) to become either “Set High” or “Clear Low”, and click [Write] button of “Pin Set/Clear (PAGE1, GPSCR)”. d. LED of GP0~GP7 turns on when pin level of GP0~GP7 set “High”. * If you check the box, data becomes “H” or “1”. If not, “L” or “0”. ̎ɽPWM control (LED Bias Control) ɾ[Write PWM Control]: Check the box of “LPU”, “PACT” and select drop down list of “BRV”, “DIV”, then click [Write PWM Control] button. “LPU”, “BRV”, “PACT” and “DIV” corresponds to LPU bit, BRV4-0 bits, PACT bit and DIV2-0 bits of AK4184A’s register (PWM Control Register). < Example > a. Check the box of “PACT” to become “Normal Mode”, and “LPU” is “CMOS”. b. Select any value from drop down list of “BRV” and “DIV”. (“BRV” modulate PWM. If value is small, become dim. If large, become bright.) c. When click [Write PWM Control] button, white LED of LED9,10 turns on. * If you check the box, data becomes “H” or “1”. If not, “L” or “0”. ̏ɽPower down control ɾ[Write PD Control]: Check the box of “KeyPad PD” and “TSC PD”, then click [Write PD Control] button. “KeyPad PD” and “TSC PD” corresponds to KPPD bit and TPPD bit of AK4184A’s register (Power Down Register). * If you check the box, data becomes “H” or “1”. If not, “L” or “0”. <KM093500> 2008/03 - 14 -
[AKD4184A-A]
Revision History
(yy/mm/dd) Manual Revision Board Revision Reason Page Contents 08/03/14 KM093500 0 First edition IMPORTANT NOTICE z These products and their specifications are subject to change without notice. When you consider any use or application of these produc ts, please make inquiries the sales office of Asahi Kasei EMD Corporation (AKEMD) or authorized distributors as to current status of the products. z AKEMD assumes no liability for infringement of any patent, intellectual property, or other rights in the application or use of any information contained herein. z Any export of these products, or devices or systems containi ng them, may require an export license or other official approval under the law and regulations of the country of export pertaining to customs and tariffs, currency exchange, or strategic materials. z AKEMD products are neither intended nor authorized for use as critical componentsNote1) in any safety, life support, or other hazard related device or system Note2), and AKEMD assumes no responsibility for such use, except for the use approved with the express written consent by Representative Director of AKEMD. As used here: Note1) A critical component is one whose failure to func tion or perform may reasonably be expected to result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or system containing it, and which must therefore meet very high standards of performance and reliability. Note2) A hazard related device or system is one designed or intended for life support or maintenance of safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to function or perform may reasonably be expected to result in loss of life or in significant injury or damage to person or property. z It is the responsibility of the buyer or distributor of AKEMD products, who distributes, dis poses of, or otherwise places the product with a third party, to notify such third party in advance of the above content and conditions, and the buyer or distributor agrees to assume any and all responsibility and liability for and hold AKEMD harmless from any and all claims arising from the use of said product in the absence of such notification. <KM093500> 2008/03 - 15 -
Date: Sheet of AK4184A 0 AKD4184A-A 14Thursday, February 14, 2008 Title Size Document Number Rev Date: Sheet of AK4184A 0 AKD4184A-A 14Thursday, February 14, 2008 Title Size Document Number Rev Date: Sheet of AK4184A 0 AKD4184A-A 14Thursday, February 14, 2008 CN3 10pin CN3 10pin TP9 VSS1 TP9 VSS1 TP30 TP30 R5 1 TP11 YP TP11 YP R10 R10 R17 0R17 0 R18 0R18 0 TP19 GP3 TP19 GP3 R1 0R1 0 TP5 SCLK TP5 SCLK TP12 XN TP12 XN C22 0.01u C22 0.01u TP16 GP6 TP16 GP6 TP36 IOVDD TP36 IOVDD TP31 TP31 R4 1 R5 51R5 51 R14 R14 TP23 BRCONT TP23 BRCONT R12 R12 R20 0R20 0 R30 R30 R8 0R8 0 CN2 10pin CN2 10pin R28 R28 TP6 CSN TP6 CSN R22 0R22 0 R29 R29 TP21 GP1 TP21 GP1
1 R6 51R6 51
0.1u 0.1u R26 R26 R15 R15 R23 0R23 0 TP15 GP7 TP15 GP7 R3 51R3 51 TP4 DIN TP4 DIN CN4 10pin CN4 10pin TP34 TP34 TP22 GP0 TP22 GP0 C23 0.01u C23 0.01u R2 51R2 51 CN1 10pin CN1 10pin R21 0R21 0 R16 R16 TP27 TP27 R27 R27 TP33 TP33 TP13 XP TP13 XP C21 0.01u C21 0.01u R11 R11 TP2 BUSY TP2 BUSY TP14 AVDD TP14 AVDD TP28 TP28 C2 1 TP17 GP5 TP17 GP5 R32 R32 TP29 TP29 C1 1 C20 0.01u C20 0.01u TP8 PENIRQN TP8 PENIRQN R19 0R19 0 TP1 KEYIRQN TP1 KEYIRQN 1R25 0R25 0 TP26 TP26 TP18 GP4 TP18 GP4 R24 0R24 0 TP25 TP25 TP3 DOUT TP3 DOUT 0.1u 0.1u TP32 TP32 10u 10u TP24 TP24 TP10 YN TP10 YN TP7 RESETN TP7 RESETN R31 R31 - 16 -
Date: Sheet of Analog 0 AKD4184A-A 24Thursday, February 14, 2008 Title Size Document Number Rev Date: Sheet of Analog 0 AKD4184A-A 24Thursday, February 14, 2008 Title Size Document Number Rev Date: Sheet of Analog 0 AKD4184A-A 24Thursday, February 14, 2008 YN TSC TSC TSC AIN AIN GND GND AIN XP TSC VCC1 T-45_OR VCC1 T-45_OR + C7 47u + C7 47u 1 2 + C8 47u + C8 47u 1 2 8P HEADER 8P HEADER (short) (short) 1 2 JP4 LEDVIN_SEL JP4 LEDVIN_SEL + C6 47u + C6 47u 1 2 AGND1 T-45_BK AGND1 T-45_BK + C5 47u + C5 47u 1 2 AVDD1 T-45_OR AVDD1 T-45_OR JP5 XP_SEL JP5 XP_SEL (short) (short) 1 2 DGND1 T-45_BK DGND1 T-45_BK JP2 IOVDD_SEL JP2 IOVDD_SEL + C9 100u + C9 100u 1 2 R33 R33 LEDVIN1 T-45_RED LEDVIN1 T-45_RED JP1 GND JP1 GND IOVDD1 T-45_OR IOVDD1 T-45_OR (short) (short) JP7 XN_SEL JP7 XN_SEL (short) (short) 1 2 AIN_YP AIN_YP JP3 VCC_SEL JP3 VCC_SEL AIN_XPYN AIN_XPYN 5L4 (short) (short) 1 2 JP8 YN_SEL JP8 YN_SEL JP17 AIN_SEL JP17 AIN_SEL IFVCC1 T-45_RED IFVCC1 T-45_RED JP6 YP_SEL JP6 YP_SEL - 17 -
Date: Sheet of GIPO, Key Pad 0 AKD4184A-A 34Thursday, February 14, 2008 Title Size Document Number Rev Date: Sheet of GIPO, Key Pad 0 AKD4184A-A 34Thursday, February 14, 2008 Title Size Document Number Rev Date: Sheet of GIPO, Key Pad 0 AKD4184A-A 34Thursday, February 14, 2008 OUT OUT OUT OUT OUT OUT OUT OUT IN IN IN IN IN IN IN IN LED2 GP1 LED2 GP1 KA SW16 TACT SW SW16 TACT SW LED7 GP6 LED7 GP6 KA JP15 GP6 JP15 GP6 SW8 TACT SW SW8 TACT SW R41 R41 C11 0.1u C11 0.1u SW14 TACT SW SW14 TACT SW SW23 TACT SW SW23 TACT SW SW15 TACT SW SW15 TACT SW SW21 TACT SW SW21 TACT SW JP11 GP2 JP11 GP2 LED4 GP3 LED4 GP3 KA SW30 TACT SW SW30 TACT SW SW22 TACT SW SW22 TACT SW SW28 TACT SW SW28 TACT SW SW3 TACT SW SW3 TACT SW R37 R37 SW29 TACT SW SW29 TACT SW LED3 GP2 LED3 GP2 KA SW10 TACT SW SW10 TACT SW RN2 100k RN2 100k JP9 GP0 JP9 GP0 JP19 LED_EN JP19 LED_EN R40 R40 R39 R39 C10 0.1u C10 0.1u SW17 TACT SW SW17 TACT SW SW4 TACT SW SW4 TACT SW JP12 GP3 JP12 GP3 SW24 TACT SW SW24 TACT SW JP16 GP7 JP16 GP7 SW11 TACT SW SW11 TACT SW R36 R36 R38 R38 SW18 TACT SW SW18 TACT SW SW6 TACT SW SW6 TACT SW 74AVC8T245 74AVC8T245 A13 A24 A35 A46 A57 A68 A79 A810 B1 21 B2 20 B3 19 B4 18 B5 17 B6 16 B7 15 B8 14 GND11 GND12 GND 13 VCCA1 DIR2 VCCB24 VCCB23 OE 22 SW5 TACT SW SW5 TACT SW JP13 GP4 JP13 GP4 SW25 TACT SW SW25 TACT SW SW13 TACT SW SW13 TACT SW SW12 TACT SW SW12 TACT SW LED8 GP7 LED8 GP7 KA SW19 TACT SW SW19 TACT SW JP20 PULL_UP JP20 PULL_UP LED1 GP0 LED1 GP0 KA RN1 100k RN1 100k SW20 TACT SW SW20 TACT SW SW26 TACT SW SW26 TACT SW 123456 78 SW DIP-8 123456 78 SW DIP-8 SW27 TACT SW SW27 TACT SW JP14 GP5 JP14 GP5 R55 100k R55 100k LED5 GP4 LED5 GP4 KA R34 R34 SW1 TACT SW SW1 TACT SW R35 R35 JP10 GP1 JP10 GP1 SW7 TACT SW SW7 TACT SW SW2 TACT SW SW2 TACT SW LED6 GP5 LED6 GP5 KA SW9 TACT SW SW9 TACT SW - 18 -
Date: Sheet of LED Driver, Digital I/F 0 AKD4184A-A 44Thursday, February 14, 2008 Title Size Document Number Rev Date: Sheet of LED Driver, Digital I/F 0 AKD4184A-A 44Thursday, February 14, 2008 Title Size Document Number Rev Date: Sheet of LED Driver, Digital I/F 0 AKD4184A-A 44Thursday, February 14, 2008 DOUT BUSY PENIRQN KEYIRQN VCCIOSCLK CSN DIN RESETN GND SCLK CSN RESETN DIN KEYIRQN PENIRQN BUSY DOUT SCLK GND DOUT GND DIN CSN RESETN HL R56 100k R56 100k PORT2 Digital IF PORT2 Digital IF 910 C17 0.01u C17 0.01u C13 C13 C12 C12 SW31 RESET SW31 RESET R52 100k R52 100k R51 (open)R51 (open) JP18 PWM JP18 PWM R43 51R43 51 JP21 DOUT_PD JP21 DOUT_PD MA21D38 MA21D38 C15 0.1u C15 0.1u 74AVC8T245 74AVC8T245 A13 A24 A35 A46 A57 A68 A79 A810 B1 21 B2 20 B3 19 B4 18 B5 17 B6 16 B7 15 B8 14 GND11 GND12 GND 13 VCCA1 DIR2 VCCB 24 VCCB 23 OE 22 R44 51R44 51 R58 (open) R58 (open) R50 51R50 51 LED10 NSPW310BS LED10 NSPW310BS K A R57 (open) R57 (open) C14 (open) C14 (open) R47 51R47 51 R53 1kR53 1k R54 1kR54 1k R45 51R45 51 R59 (open) R59 (open) PORT3 USB I/F Board PORT3 USB I/F Board 910 AK7953 AK7953 SGND1 VCOIL2 VCOIL3 VOUT4 OUT2 5 VFB 6 GND 7 CONT 8 NC9 NC10 EN211 EN112 NC13 VIN14 GND15 GND16 LED9 NSPW310BS LED9 NSPW310BS K A R48 51R48 51 10uH 10uH 1 2 R46 51R46 51 74AVC8T245 74AVC8T245 A13 A24 A35 A46 A57 A68 A79 A810 B1 21 B2 20 B3 19 B4 18 B5 17 B6 16 B7 15 B8 14 GND11 GND12 GND 13 VCCA1 DIR2 VCCB 24 VCCB 23 OE 22 R49 51R49 51 C16 0.1u C16 0.1u R42 R42 C19 0.1u C19 0.1u PORT1 PARALLEL 25P PORT1 PARALLEL 25P C18 0.1u C18 0.1u - 19 -
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