M48T18-100PC 데이터 시트보기 (PDF) - STMicroelectronics

부품명

상세내역

일치하는 목록

M48T18-100PC

CMOS 8K x 8 TIMEKEEPER SRAM

STMicroelectronics 

M48T08

M48T18

CMOS 8K x 8 TIMEKEEPER SRAM

INTEGRATED ULTRA LOW POWER SRAM,

REAL TIME CLOCK and POWER-FAIL

CONTROL CIRCUIT

BYTEWIDE RAM-LIKE CLOCK ACCESS

BCD CODED YEAR, MONTH, DAY, DATE,

HOURS, MINUTES and SECONDS

CLOCK ACCURACY of ± 1 MINUTE a

MONTH, @ 25°C

SOFTWARE CONTROLLED CLOCK

CALIBRATION for HIGH ACCURACY

APPLICATIONS

AUTOMATICPOWER-FAIL CHIP DESELECTand

WRITE PROTECTION

CHOICE of TWO WRITE PROTECT

VOLTAGES:

– M48T08: 4.5V ≤ VPFD ≤ 4.75V

– M48T18: 4.2V ≤ VPFD ≤ 4.5V

SELF CONTAINED BATTERY and CRYSTAL

in the CAPHAT DIP PACKAGE

SMALL OUTLINE PACKAGE PROVIDES

DIRECT CONNECTION for a SNAPHAT

HOUSING CONTAINING the BATTERY and

CRYSTAL

SNAPHAT HOUSING (BATTERY and

CRYSTAL) REPLACEABLE

10 YEARS of DATA RETENTION and CLOCK

OPERATION in the ABSENCE of POWER

PIN and FUNCTION COMPATIBLE with

JEDEC STANDARD 8K x 8 SRAMs

Table 1. Signal Names

A0-A12

Address Inputs

DQ0-DQ7 Data Inputs / Outputs

INT

Power Fail Interrupt

E1

Chip Enable 1

E2

Chip Enable 2

G

Output Enable

W

Write Enable

VCC

Supply Voltage

VSS

Ground

November 1994

28

1

PCDIP28 (PC)

Battery CAPHAT

28

1

SOH28 (MH)

Battery SNAPHAT

Figure 1. Logic Diagram

VCC

13

A0-A12

8

DQ0-DQ7

W

M48T08

E1

M48T18

INT

E2

G

VSS

AI01020

1/18

Share Link: