pcf8583 NXP Semiconductors, pcf8583 Datasheet - Page 4

• Manufacturer Part Number: pcf8583
• Description: Clock/calendar With 240 X 8-bit Ram
• Manufacturer: NXP Semiconductors

Philips Semiconductors
5
6
1997 Jul 15
handbook, full pagewidth
OSCI
OSCO
A0
V
SDA
SCL
INT
V
SYMBOL
SS
DD
Clock/calendar with 240
BLOCK DIAGRAM
PINNING
PIN
1
2
3
4
5
6
7
8
OSCO
oscillator input, 50 Hz or event-pulse
input
oscillator output
address input
negative supply
serial data line
serial clock line
open drain interrupt output (active
LOW)
positive supply
OSCI
V DD
SDA
V SS
SCL
INT
A0
1
2
7
8
4
3
6
5
DESCRIPTION
OSCILLATOR
INTERFACE
POWER-ON
32.768 kHz
PCF8583
I
RESET
2
C-BUS
8-bit RAM
Fig.1 Block diagram.
REGISTER
CONTROL
ADDRESS
DIVIDER
100 : 128
1 : 256
LOGIC
OR
4
handbook, halfpage
100 Hz
hundredth of a second
OSCO
OSCI
V SS
weekdays/months
alarm registers
A0
control/status
alarm control
Fig.2 Pinning diagram.
year/date
(240
seconds
minutes
or RAM
hours
timer
RAM
1
2
3
4
PCF8583P
PCF8583T
8)
MRB014
MRB001
00
01
07
08
0F
FF
7
6
5
8
Product specification
V DD
SCL
SDA
INT
PCF8583