pcf8593 NXP Semiconductors, pcf8593 Datasheet - Page 6

• Manufacturer Part Number: pcf8593
• Description: Low Power Clock/calendar
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1997 Mar 25
handbook, full pagewidth
Low power clock/calendar
MSB
7
MBD810
6
5
4
Fig.3 Control/status register.
3
2
6
1
LSB
0
memory location 00
timer flag
alarm flag (50% duty factor
alarm enable bit:
0
1
mask flag:
0
1
function mode :
00 clock mode 32.768 kHz
01 clock mode 50 Hz
10 event-counter mode
11
hold last count flag :
0 count
1 store and hold last count in
stop counting flag :
0 count pulses
1 stop counting, reset divider
capture latches
alarm disabled: flags toggle
(memory locations 08 to 0F
enable Alarm Control register
alarm control register disabled
can be treated as RAM)
(memory location 08 is the
read locations 05 to 06
unmasked
read date and month count
directly
test modes
Alarm Control register)
(50% duty factor
seconds flag if alarm
enable bit is 0)
minutes flag if alarm
enable bit is 0)
Product specification
PCF8593