DS1345AB 데이터 시트보기 (PDF) - Maxim Integrated

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DS1345AB

1024k Nonvolatile SRAM with Battery Monitor

Maxim Integrated 

DS1345Y/AB

9. Each DS1345 has a built-in switch that disconnects the lithium source until the user first applies VCC.

The expected tDR is defined as accumulative time in the absence of VCC starting from the time power

is first applied by the user. This parameter is assured by component selection, process control, and

design. It is not measured directly during production testing.

10. All AC and DC electrical characteristics are valid over the full operating temperature range. For

commercial products, this range is 0°C to 70°C. For industrial products (IND), this range is -40°C to

+85°C.

11. In a power-down condition the voltage on any pin may not exceed the voltage on VCC.

12. tWR1 and tDH1 are measured from WE going high.

13. tWR2 and tDH2 are measured from CE going high.

14. RST and BW are open-drain outputs and cannot source current. External pullup resistors should be

connected to these pins for proper operation. Both pins will sink 10mA.

15. DS1345 modules are recognized by Underwriters Laboratory (U.L.®) under file E99151.

DC TEST CONDITIONS

Outputs Open

Cycle = 200ns for operating current

All voltages are referenced to ground

AC TEST CONDITIONS

Output Load: 100 pF + 1TTL Gate

Input Pulse Levels: 0 – 3.0V

Timing Measurement Reference Levels

Input: 1.5V

Output: 1.5V

Input pulse Rise and Fall Times: 5ns

ORDERING INFORMATION

DS1345 TTP - SSS - III

Operating Temperature Range

blank: 0° to 70°

IND: -40° to +85°C

Access Speed

70: 70ns

100: 100ns

Package Type

P: 34-pin PowerCap Module

VCC Tolerance

AB: ±5%

Y: ±10%

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