XC164-16 Datasheet, PDF (77/417 Pages) Infineon Technologies AG – 16-Bit Single-Chip Microcontroller with C166SV2 Core Volume 2 (of 2): Peripheral Units

XC164-16 Derivatives
Peripheral Units (Vol. 2 of 2)
Real Time Clock
Timer T14 and its reload register are accessed via dedicated locations. The four RTC
counters CNT3 … CNT0 are accessed via the two 16-bit RTC timer registers, RTCH and
RTCL. The associated four reload values REL3 … REL0 are accessed via the two 16-bit
RTC reload registers, RELH and RELL.
Table 15-2 Register Locations for Timer T14
Register Name Long/Short
Address
Reset
Value
Notes
RTC_T14
F0D2_H/69_H
0000_H
16-bit timer, can be used as prescaler
for the RTC block
RTC_T14REL F0D0_H/68_H
0000_H
Timer T14 reload register
RTC_RTCH
RTC Timer High Register
ESFR (F0D6_H/6B_H)
15 14 13 12 11 10 9 8 7 6 5
CNT3
rwh
Reset Value: 0000_H
43210
CNT2
rwh
RTC_RTCL
RTC Timer Low Register
ESFR (F0D4_H/6A_H)
15 14 13 12 11 10 9 8 7 6 5
Reset Value: 0000_H
43210
CNT1
rwh
CNT0
rwh
Field
CNTx
(x = 3 … 0)
Bits Type
[15:6] rwh
[5:0]
[15:10]
[9:0]
Description
RTC Timer Count Section CNTx
An overflow of this bitfield triggers a count pulse to
the next count section CNTx+1 (except for CNT3)
followed by a reload of CNTx from bitfield RELx.
In addition, an interrupt request is triggered.
User’s Manual
RTC_X41, V2.1
15-8
V2.1, 2004-03