Datasheet

73S1215F Data Sheet DS_1215F_003
54 Rev. 1.4
There are 3 sets of registers to load the RTC 24-bit accumulator, 32-bit counter and 23-bit trim registers.
The registers are loaded when the RTCLD bit is set in RTCCtl.
Table 56: The 32-bit RTC Counter
Register RTCCnt3 RTCCnt2 RTCCnt1 RTCCnt0
RTCCnt[31:24] RTCCnt[23:16] RTCCnt[15:8] RTCCnt[7:0]
Table 57: The 24-bit RTC Accumulator
Register RTCACC2 RTCACC1 RTCACC0
RTCACC [23:16] RTCACC [15:8] RTCACC [7:0]
Table 58: The 24-bit RTC Trim (sign magnitude value)
Register RTCTrim2 RTCTrim1 RTCTrim0
RTCTrim [23:16] RTCTrim [15:8] RTCTrim [7:0]
External Interrupt Control Register (INT5Ctl): 0xFF94 Å 0x00
Table 59: The INT5Ctl Register
MSB LSB
PDMUX – RTCIEN RTCINT USBIEN USBINT KPIEN KPINT
Bit Symbol Function
INT5Ctl.7 PDMUX Power down multiplexer control.
INT5Ctl.6 –
INT5Ctl.5 RTCIEN
When set =1, enables RTC interrupt. Note: The RTC based watchdog will
be enabled when set.
INT5Ctl.4 RTCINT
When set =1, indicates interrupt from Real Time Clock function. Cleared
on read of register.
INT5Ctl.3 USBIEN USB interrupt enable.
INT5Ctl.2 USBINT USB interrupt flag.
INT5Ctl.1 KPIEN Keypad interrupt enable.
INT5Ctl.0 KPINT Keypad interrupt flag.