PCF8593T NXP Semiconductors, PCF8593T Datasheet - Page 9

• Manufacturer Part Number: PCF8593T
• Manufacturer: NXP Semiconductors

Specifications of PCF8593T

• Bus Type: Serial (I2C)
• User Ram: 8Byte
• Package Type: SO
• Operating Supply Voltage (max): 6V
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 8
• Mounting: Surface Mount
• Date Format: DW:DM:M:Y
• Time Format: HH:MM:SS:hh
• Lead Free Status / RoHS Status: Compliant

NXP Semiconductors
PCF8593
Product data sheet
7.6 Alarm registers
All alarm registers are allocated with a constant address offset of 08h to the
corresponding counter registers (see
An alarm signal is generated when the contents of the alarm registers match bit-by-bit the
contents of the involved counter registers. The year and weekday bits are ignored in a
dated alarm. A daily alarm ignores the month and date bits. When a weekday alarm is
selected, the contents of the alarm weekday and month register selects the weekdays on
which an alarm is activated (see
Remark: In the 12 hour mode, bits 6 and 7 of the alarm hours register must be the same
as the hours counter.
Fig 9.
Alarm control registers, clock mode
MSB
7
013aaa387
All information provided in this document is subject to legal disclaimers.
6
Rev. 04 — 6 October 2010
5
4
3
Figure
2
Figure
10).
1
8).
LSB
0
alarm interrupt enable:
(only valid when alarm enable in
the control and status register is set)
0
1
clock alarm function:
memory location 08h
timer function:
000
001
010
011
100
101
110
111
timer interrupt enable:
00
01
10
11
timer alarm enable:
0
1
0
1
Low power clock and calendar
no timer alarm
timer alarm
no timer
hundredths of a second
seconds
minutes
hours
days
not used
test mode, all counters
in parallel
alarm flag, no interrupt
alarm flag, interrupt
timer flag, no interrupt
timer flag, interrupt
no clock alarm
daily alarm
weekday alarm
dated alarm
PCF8593
© NXP B.V. 2010. All rights reserved.
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