CF5705

CF5705AA NPC | Alldatasheet

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NIPPON PRECISION CIRCUITS—1 NIPPON PRECISION CIRCUITS INC. Analog Watch Stepping Motor Driver OVERVIEW The CF5705 series is a low-current analog watch stepping motor driver CMOS IC with built-in 32.768 kHz crystal oscillator circuit.

FEATURES

n 32.768 kHz crystal oscillator circuit C G and C D built-in n 3.6 to

1.2 V operating supply voltage range

n Operating current consumption SS = –1.55V , C D = 16pF: 250 nA (max) SS = –2.8V , C D = 26pF: 1000 nA (max) Note: Current consumption depends on the b uilt-in capacitor. n Reset function

4 Hz and subsequent frequency dividers are reset

ORDERING INFORMATION

Pad coordinates Motor Built-in capacitor 1. Parasitic capacitance is included. Parasitic capacitance: C G = C D = 4pF 12345678 Cycle (Tcy/2) sec Pulse (Tpw) sec Test (Tcy) sec C G pF C D pF CF5705AA XT XTN RESET VSS TEST OUT2 OUT1 VDD 1 4.9m 125m 4 16 CF5705BC VSS RESET XT XTN VDD OUT2 OUT1 TEST 250m 23.4m 125m 4 26 CF5705AD XT XTN RESET VSS TEST OUT2 OUT1 VDD 1 23.4m 125m 4 30 CF5705AE XT XTN RESET VSS TEST OUT2 OUT1 VDD 20 5.9m 125m 4 16 CF5705CF VSS TEST XTN XT VDD OUT2 OUT1 RESET 1 4.9m 62.5m 4 16 CF5705CG VSS TEST XTN XT VDD OUT2 OUT1 RESET 1 3.9m 62.5m 4 16 Device Package CF5705 Chip form Function(Motor, Built-in capacitor) CF5705 Pad coordinate

NIPPON PRECISION CIRCUITS—2 PAD DIMENSIONS (Top view) PAD COORDINATES BLOCK DIAGRAM PAD DESCRIPTION Pin n umber: Refer to Ser ies lineup. Chip size: 1.000 1.060 m m Chip thic kness: 220 m m Pad size: 100 100 m m Reverse side: V DD level (0,0) (1000,1060) NPC 4 5 HA5705 Number X ( m m) Y ( m 1 155 785 2 155 597 3 155 363 4 155 175 5 844 175 6 844 363 7 844 694 8 844 882 XTN TESTRESET XT OUT2 OUT132kHz Oscillator Voltage regulator Divider and Output buffer control Name Description VSS Negative supply voltage V D D Positive supply voltage XT Crystal oscillator circuit input X T N Crystal oscillator circuit output OUT1 Stepping motor driver output 1 OUT2 Stepping motor driver output 2 RESET Reset input TEST T est mode select. 512 Hz clock output

NIPPON PRECISION CIRCUITS—3 SPECIFICATIONS Absolute Maximum Ratings V DD = 0 V Recommended Operating Conditions

Electrical Characteristics

V DD = 0 V , T a = 25 C, X’tal C I = 55k W max Parameter Symbol Rating Unit Supply v oltage r ange V SS 5.0 to 0.3 V Input voltage r ange V IN V SS 0.3 to 0.3 V Stor age temper ature r ange T stg 40 to 125 C Parameter Symbol Rating Unit Supply voltage V SS 3.6 to 1.2 V Oper ating temperature T opg 20 to 75 C Parameter Symbol Condition Rating Unit min typ max Oper ating supply voltage V SS 2.0 1.2 V Oper ating current consumption 1. Current consumption is measured in the measurement circuit (see next page). I DD No load, V SS = –1.55V , TR + C G ) = 15 pF , C D = 16 pF – 0.15 0.25 µA No load, V SS = –2.8V , TR + C G ) = 24 pF , C D = 26 pF – 0.40 1.00 µA Reset input current I RST RESET: V RST = V DD , V SS = – 1.55V –6– n A RESET: V RST = V DD , V SS = –2.8V – 25 100 nA Reset input resistance R RST V RST

1.35 V, V

= –1.55V 15 35 60 k W V RST

2.6 V, V

= –2.8V 5 15 50 k W Motor output current I MOT R L = 2 k W , V SS 1.55 V 0.7 – – m A R L = 1 k W , V SS 2.4 V 2.18 2.29 – mA Motor output cycle time (nor mal mode) 2. Refer to Series lineup. T CY Refer to the SERIES LINEUP s Motor output cycle time (test mode) t CY ms Motor output pulsewidth T PW ms Oscillator start v oltage V ST A 1.3 – – V Oscillator start time T ST A From supply ON to 512 Hz output on TEST –25s Frequency v oltage de viation D f/f V SS 1.2 fi

3.6 V, C

= 5 pF – 0.2 1 ppm/0.1V Frequency de viation e ] / f’ D = 16pF) e ’ = [f (2.8V) – f’ ] / f’ D = 26pF) : Oscillation frequency center v alue of Standard Deviation in the same measur ing conditions e Built-in C D – 8 – 8 ppm Built-in C D and C G – 16 – 16 ppm Inte rnal capacitance C G , C D G + C D ) < 62 pF Refer to the SERIES LINEUP pF

NIPPON PRECISION CIRCUITS—4 Measurement Circuit Crystal: f = 32.768 kHz, CI = 20 k W , C0 = 1.3pF , C1 = 2.6fF XTN TEST X'tal VSS VDD RESETCTR XT OUT2OUT1 A CD A IMOT RL IRST

NIPPON PRECISION CIRCUITS—5 FUNCTIONAL DESCRIPTION Motor Output Waveform The motor output waveform cycle time and output pulsewidth are set by mask option. Reset Function Reset operation A reset operation occurs when RESET is held HIGH DD ) for a period of 93.75 ms or greater, otherwise the reset is ignored. When the reset pulse is valid, the 4 Hz and subsequent frequency dividers are reset. Reset Release When the reset is released, the first output pulse occurs on the output pin opposite the output pin where the preceding motor drive output pulse occurred; first pulse occurs on OUT1 if previous motor drive pulse occurred on OUT2, and vice versa. A delay of T CY 0.125 to T CY /2 takes place from when reset is released until the first output pulse occurs. OUT1 OUT2 TPW TCY/2 VDD VSS TPW TCY/2 VDD VSS T < TON T > TON VDD VSS RESET (open) OUT1 TPW VDD VSS OUT2 TCY/2 TCY/2 VDD VSS TD

NIPPON PRECISION CIRCUITS—6 Test Function Normal mode (TEST = open circuit) In test mode, a 512 Hz rectangular wave is output on TEST. Note that the output load (probe) must be greater than 10 M W and less than 20 pF. The motor drive outputs on OUT1 and OUT2 continue to oper- ate normally. Test mode 1 (TEST = V DD Test mode 1 is invoked when TEST is held HIGH for a minimum of 2 cycles of the 512 Hz clock CH > 3.9 ms), otherwise it is ignored. In test mode 1, high-speed motor output operation occurs, with the cycle time set by mask option to 62.5 or 125 ms. Test mode 2 (TEST = V SS Test mode 2 is a dedicated IC test mode. In test mode 2, the device operates at 32-times speed, with the supply voltage connected directly to the oscillator circuit. Note that if a reset input occurs, the internal operation is reset and device output stops. Once operation stops, normal operation is not restored until TEST is either open circuit or goes LOW. OUT1 OUT2 TPW TCY/2 VDD VSS TPW TCY/2 VDD VSS tCY/2 tCY/2 TPW T < Tch T > Tch VDD VSS TEST

NIPPON PRECISION CIRCUITS—7 NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility fo r the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits are free from patent infr ingement. Applications for any devices shown in this data sheet are for illustr ation only and Nippon Precision Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing o r modification. The products described in this data sheet are not intended to use for the apparatus which infl uence human lives due to the failure or malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinaft er, including compliance with export controls on the distribution or dissemination of the products. Customers shall not e xport, directly or indirectly, any products without first obtaining required licenses and approv als from appropriate gover nment agencies. NIPPON PRECISION CIRCUITS INC. 4-3, Fukuzumi 2-chome Koto-ku, Tokyo 135-8430, J apan Telephone: 03-3642-6661 Facsimile: 03-3642-6698 NC9815AE 2000.07 NIPPON PRECISION CIRCUITS INC.