PCF8523 NXP [NXP Semiconductors], PCF8523 Datasheet - Page 9

• Manufacturer Part Number: PCF8523
• Description: Real-Time Clock (RTC) and calendar
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCF8523
Product data sheet
8.2.2 Register Control_2
Table 6.
[1]
Bit
7
6
5
4
3
2
1
0
Default value.
Symbol
WTAF
CTAF
CTBF
SF
AF
WTAIE
CTAIE
CTBIE
Control_2 - control and status register 2 (address 01h) bit description
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Rev. 3 — 30 March 2011
Value
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
[1]
[1]
[1]
[1]
[1]
[1]
[1]
[1]
Description
no watchdog timer A interrupt generated
flag set when watchdog timer A interrupt
generated; flag is read-only and cleared by
reading register Control_2
no countdown timer A interrupt generated
flag set when countdown timer A interrupt
generated; flag must be cleared to clear
interrupt
no countdown timer B interrupt generated
flag set when countdown timer B interrupt
generated; flag must be cleared to clear
interrupt
no second interrupt generated
flag set when second interrupt generated; flag
must be cleared to clear interrupt
no alarm interrupt generated
flag set when alarm triggered; flag must be
cleared to clear interrupt
watchdog timer A interrupt is disabled
watchdog timer A interrupt is enabled
countdown timer A interrupt is disabled
countdown timer A interrupt is enabled
countdown timer B interrupt is disabled
countdown timer B interrupt is enabled
Real-Time Clock (RTC) and calendar
PCF8523
© NXP B.V. 2011. All rights reserved.
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