m48t86 STMicroelectronics, m48t86 Datasheet - Page 8
m48t86
Manufacturer Part Number
m48t86
Description
5v Pc Real Time Clock
Manufacturer
STMicroelectronics
Datasheet
1.M48T86.pdf
(36 pages)
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8/36
Figure 3.
Figure 4.
AD0-AD7
V BAT
V CC
R/W
28-pin SOIC connections
Block diagram
DS
AS
E
PROTECT
SWITCH
POWER
INTERFACE
WRITE
OSCILLATOR
AND
BUS
V CC
POK
MOT
V SS
V SS
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
NC
NC
NC
BCD/BINARY
INCREMENT
CALENDAR
UPDATE
CLOCK/
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PERIODIC INTERRUPT/SQUARE WAVE SELECTOR
/ 8
M48T86
AI01642
28
27
26
25
24
23
22
21
20
19
18
17
16
15
/ 64
REGISTERS A,B,C,D
CLOCK CALENDAR,
AND ALARM RAM
NC
V CC
SQW
NC
RCL
NC
IRQ
RST
DS
NC
R/W
AS
E
NC
(114 BYTES)
REGISTERS
STORAGE
SQUARE WAVE
OUTPUT
/ 64
SQW
IRQ
RST
DOUBLE
BUFFERED
RCL
AI01643