S2100

S2100 SII | Alldatasheet

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Datasheet sections

2 Seiko Instruments Inc. nnnn Terminal Description nnnn Mode Table nnnn Absolute Maximum Ratings nnnn Recommended Operating Conditions Pin No. Symbol Pin Name Description

1 DATA Data input/output terminal Tri-state data input/output terminal

2 CE/PE Mode select terminal Mode select terminal

(Refer to operation mode table)

3 COUNTER

OUT Counter output terminal 6-bit counter; 64th bit detection output terminal 4V SS Negative power supply terminal Normally, connected to GND. 5P D /VPP Program voltage input terminal Input terminal of writing voltage to FUSE memory at 21 V. (Refer to operation mode table.) Pull-down resistor built in. 6 CLK Clock input terminal Clock input terminal of 6-bit counter. Operates at the falling edge. 7 RST Reset input terminal Reset input terminal of 6-bit counter. Operates at “L”. 8V DD Positive power supply terminal Normally, connected to +1.1 to +5.5 V. Terminal Read CE/PE P D /VPP CLK RST DATA Read V SS VSS Input possible Input possible Data output Counter hold V DD VSS Input impossible Input impossible High impedance Program V DD VPP Input impossible Input impossible Data input Parameter Symbol Ratings Unit Power supply voltage V DD -0.3 to +6.5 V PD /VPP input voltage V PP -0.3 to 26 V Input voltage V IN VSS -0.3 to VDD +0.3 V Output voltage V OUT VSS -0.3 to VDD +0.3 V Storage temperature under bias Vbias -30 to +85 °C Storage temperature V stg -40 to +125 °C Parameter Symbol Conditions Min. Typ. Max. Unit Ta=25°C, Read, tCH =15ms 1.1 1.5 5.5 V Power supply voltage V DD Ta=25°C, Write 4.5 5.0 5.5 V Ta=25°C, Read V DD -0.3 ¾ VDD V High level input voltage V IH Ta=25°C, Write V DD -0.3 ¾ VDD V Ta=25°C, Read -0.3 ¾ 0.3 V Low level input voltage V IL Ta=25°C, Write -0.3 ¾ 0.5 V Operating temperature V opr -20 ¾ 70 °C Table 1 Table 2 Table 3 Table 4

Seiko Instruments Inc. 3 nnnn DC Electrical Characteristics nnnn AC Electrical Characteristics 1. Read mode 2. Write mode Parameter Symbol Conditions Min. Typ. Max. Unit Operating current consumption IDDO VDD =1.5 V, fCLK =50 kHz ¾¾ 20 mA Standby current consumption IDDS VDD =1.5 V, RST=VDD CLK=V DD , CE/PE=VSS ¾¾ 0.3 mA PD /VPP input voltage V PP 20 21 22 V PD /VPP input current I PP ¾¾ 150 mA IOH VDD =1.1 to 5.5 V, VOH =VDD -0.3 V -300 ¾¾m A Output current IOL VDD =1.1 to 5.5 V, VOH =0.3 V 300 ¾¾m A Pull-down resistance R D VDD =1.5 V 0.1 0.2 0.4 M W Parameter Symbol Min. Typ. Max. Unit RST hold time t RH 5.0 ¾¾m s Read cycle time t RC 2.0 ¾¾m s CLK hold time t CH 5.0 ¾¾m s Access time t ACC ¾¾ 5.0 ms CE/PE setup time t CES 2.0 ¾¾m s RST setup time t RS 5.0 ¾¾m s CLK setup time t CS 5.0 ¾¾m s CE access time t CE ¾¾ 5.0 ms Output disable time t WZ ¾¾ 500 ns CLK and RST inhibit time t CRI ¾¾ 500 ns Parameter Symbol Min. Typ. Max. Unit CE-data setup time t CDS 0.5 ¾¾m s Data setup time t DS 0.5 ¾¾m s Data hold time t DH 0 ¾¾m s CE-data hold time t CDH 2.0 ¾¾m s VPP rise time t r 20 ¾¾m s Program pulse width t PW 8.0 ¾¾ ms VPP rise slope DVPP ¾¾ 4V / ms Table 5 Table 6 (Ta=25°C, VDD =1.5 V) Load : 60 pF Table 7 (Ta=25°C, VDD =5.0 V, VPP =21 V)

Seiko Instruments Inc. 5 nnnn Program Mode Operation By setting the CE/PE terminal to “H” level, the S-2100R enters the counter hold mode and at the same time enters the program mode. *5 Writing is done in program mode after selecting the address in read mode. *6 Select the address, and supply “H” level to the CE/PE terminal and “L” level to the DATA terminal, with the writing pulse VPP being supplied to the PD /VPP terminal. “L” level can be written into the selected address only once. *7 *8 If you coutinue writing from address 1 to 64, the output of the COUNTER OUT terminal goes to “H” level, just like in the read mode, and no more CLK pulses or writing pulses in program mode can be accepted. Figure 5 Program mode timing Address 2 output Address 1 output Address 1 output Data inputData input tPW tCDH CE/P DATA RS PD/VPP CL tCDS tDHtDS *5 In program mode, operate at VDD=5.0 V to assure reliability of the data writing. *6 The selection of addresses is possible only in read mode. Address 1 is selected by RST pulses and writing proceeds sequentially from address 1 by CLK pulse. 7 All the memories are initially at “H” level, so writing into “L” can be done. When data is at “H” level, writing voltage cannot be supplied to the memory. *8 Address 1 is selected again by the RST pulse. The addresses which are not written to “L” level are at “H” level, so writing “L” level in these addresses is possible.

6 Seiko Instruments Inc. nnnn Input Priority In read mode, priority is given to either the CLK or RST terminal, whichever is entered first. Whichever pulse is input earlier is recognized to be valid from the rising till the end of the operation. If the pulse input later is at “L” level, the signal is ignored, even though the effective pulse input earlier rises. *9 If the CLK and RST pulses are input, the mode shifts from read mode to counter hold mode when both the CLK and the RST terminals go to “H” level. * If the CLK and RST pulses which are input in the counter hold mode are still at “L” level after setting the CE/PE terminal to “L” level, these CLK and RST terminals are ignored. The mode shifts to read mode and data which is held before the shift is output at the DATA terminal. * In program mode, inputting the DATA terminal before the CE/PE terminal goes to “H” level is prohibited. Also, charging the writing voltage from the P D /VPP terminal is prohibited when the CE/PE terminal is at “L” level. In program mode, input to the DATA terminal muse be decided before charging the writing voltage. *12 *9 Input of the CLK and RST pulses is not recognized as valid unless both pulses are input at “H” level. *10 The counter hold mode is entered when reading of the CLK and RST pulses has been finished and DATA output has been stabilized . 11 No more CLK or RST pulses are accepted unless both the CLK and RST terminals are at “H” level. *12 If data input is changed while writing voltage is supplied, the S-2100R does not accept the changed data. nnnn Notes Memory should not be accessed for at least 10 ms after voltage is supplied and goes to VDD .

8 Seiko Instruments Inc. nnnn Characteristics 1.0 VDD = 6.0V 4.0V 2.0V 1.0V -40 100 101 102 103 104 -10 20 50 80 Ta (°C) IDDS (nA) 1. Standby current consumption IDDS - Ambient temperature Ta 1.5 2.0 VDD (V) tACC (ms) 8 -40°C -10°C 20°C 50°C 80°C 0.1 VDD (V) 0.2 0.3 0.4 0.5 0.6 0.7 4 5 6 80°C 50°C 20°C -10°C -40°C 2. Access time tACC - Power supply voltage VDD 3. Access time tACC - Power supply voltage VDD tACC (ms)