M48T129V(2005) 查看數據表（PDF） - STMicroelectronics

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M48T129V
(Rev.:2005)

5.0 or 3.3V, 1 Mbit (128 Kbit x 8) TIMEKEEPER® SRAM

STMicroelectronics 

M48T129Y, M48T129V

Figure 5. Hardware Hookup for Equivalent Surface-mount (SMT) Solution

SNAPHAT(2)

BATTERY/CRYSTAL

32,768 Hz

CRYSTAL

LITHIUM

5V

CELL

0.1µF

A0-A16

VOUT

M48T201Y/V(1,2)

VCC

A17

A18

E

W

ECON

G

WDI

RSTIN1

GCON

RST

RSTIN2

IRQ/FT

VSS

SQW

DQ0-DQ7

0.1µF

A0-A16

VCC

1Mb LPSRAM

E

W

G

VSS

DQ0-DQ7

AI03632

Notes:For pin connections, see individual data sheet for M48T201Y/V www.st.com.

The chip enable access time of the external SRAM will be the combination of the chip enable access for the SRAM itself, plus the chip

enable propagation delay tEPD for the M48T201Y/V.

1. For 5V, M48T129Y (M48T201Y + 5V 1Mb LPSRAM). For 3.3V, M48T129V (M48T201V + 3V 1Mb LPSRAM).

2. SNAPHAT Top ordered separately.

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