Datasheet > BQ4832Y

BQ4832Y

更新时间： 2024-09-14 22:39:39

品牌	Logo	应用领域
德州仪器 - TI		静态存储器
页数	文件大小	规格书
18页	679K
描述
RTC Module With 32Kx8 NVSRAM

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中文翻译

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BQ4832Y 数据手册

bq4832Y

RTC Module With 32Kx8 NVSRAM

Features

General Description

Registers for the rea l-time clock,

alarm and other special functions

➤ Integrated SRAM, real-time

clock, CPU supervisor, crystal,

power-fail circuit, and battery

The bq4832Y RTC Module is a non-

volatile 262,144-bit SRAM organ-

ized as 32,768 words by 8 bits with

an integral real-time clock and CPU

supervisor. The CPU supervisor pro-

vides a pr ogr a m m a ble wa t ch dog

timer and a microprocessor reset.

O t h e r fe a t u r e s in clu d e a la r m ,

power-fail, and periodic interrupts,

and a battery-low warning.

a r e loca t ed in r egist er s 7F F 0h –

7FFFh of the memory array.

The clock and alarm registers are

du a l-por t r ea d/wr it e SRAM loca-

tions that are updated once per sec-

ond by a clock control circuit from

the internal clock counters. The

dual-port registers allow clock up-

dates to occur without interrupting

n or m a l a ccess t o t h e r est of t h e

SRAM array.

➤ Real-Time Clock counts hun-

dredths of seconds through years

in BCD format

➤ RAM-like clock access

➤ Compatible with industry-

standard 32K x 8 SRAMs

Th e device com bin es a n in t er n a l

lithium battery, quartz crystal, clock

a n d p ower -fa il ch ip, a n d a fu ll

CMOS SRAM in a pla st ic 32-pin

DIP module. The RTC Module di-

rectly replaces industry-standard

SRAMs a n d a lso fit s in t o m a n y

E P R O M a n d E E P R O M s ock e t s

without any requirement for special

write timing or limitations on the

number of write cycles.

➤ Unlimited write cycles

The bq4832Y also contains a power-

fail-detect circuit. The circuit dese-

lects the device whenever V_CCfalls

below tolerance, providing a high de-

gree of data security. The battery is

electrically isolated when shipped

from the factory to provide maxi-

mum battery capacity. The battery

remains disconnected until the first

➤ 10-year minimum data retention

and clock operation in the ab-

sence of power

➤ Automatic power-fail chip dese-

lect and write-protection

➤ Watchdog timer, power-on reset,

alarm/periodic interrupt, power-

fail and battery-low warning

application of V_CC

➤ Software clock calibration for

greater than ±1 minute per

month accuracy

Pin Names

Pin Connections

A₀–A₁₄

Address input

RST

INT

Chip enable

RST

Microprocessor reset

Write enable

Output enable

DQ₀–DQ₇Data in/data out

INT

V_CC

V_SS

Programmable interrupt

+5 volts

Ground

32-Pin DIP Module

PN483201.eps

Sept. 1996 C

12 3 4 5 6 7...18

中文翻译

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与BQ4832Y相关器件

型号	品牌	获取价格	描述	数据表
BQ4832YMA-85	TI	获取价格	RTC Module With 32Kx8 NVSRAM
BQ4833YSH-70	TI	获取价格	0 TIMER(S), REAL TIME CLOCK, PDSO28, 0.330 INCH, SOH-28
BQ4842Y	TI	获取价格	RTC Module With 128Kx8 NVSRAM
BQ4842YMA-85	TI	获取价格	RTC Module With 128Kx8 NVSRAM
BQ4845	TI	获取价格	Parallel RTC With CPU Supervisor
BQ4845P	TI	获取价格	0 TIMER(S), REAL TIME CLOCK, PDIP28, 0.600 INCH, PLASTIC, DIP-28
BQ4845P-	TI	获取价格	Parallel RTC With CPU Supervisor
BQ4845P-A4	TI	获取价格	Parallel RTC With CPU Supervisor
BQ4845PN	TI	获取价格	0 TIMER(S), REAL TIME CLOCK, PDIP28, 0.600 INCH, PLASTIC, DIP-28
BQ4845P-N	TI	获取价格	Parallel RTC With CPU Supervisor

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