pcf8583 NXP Semiconductors, pcf8583 Datasheet - Page 13

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

Philips Semiconductors
1997 Jul 15
handbook, full pagewidth
Clock/calendar with 240
(1) If the alarm enable bit of the control/status register is reset (logic 0), a 1 Hz signal can be observed on the interrupt pin INT.
CONTROL/STATUS
REGISTER
counter
control
7
alarm
clock
6
(1)
5
Fig.11 Alarm and timer interrupt logic diagram.
ALARM
4
8-bit RAM
3
interrupt
alarm
2
CLOCK/CALENDAR
control
alarm
1
select
mode
0
MUX
13
alarm
timer
timer overflow
interrupt
7
6
TIMER
oscillator
overflow
5
INT
4
3
control
timer
REGISTER
2
CONTROL
ALARM
1
MBD818
0
Product specification
PCF8583