m48t86 STMicroelectronics, m48t86 Datasheet - Page 8

• Manufacturer Part Number: m48t86
• Description: 5v Pc Real Time Clock
• Manufacturer: STMicroelectronics

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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
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M48T86
AI01642
28
27
26
25
24
23
22
21
20
19
18
17
16
15
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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
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SQW
IRQ
RST
DOUBLE
BUFFERED
RCL
AI01643