mc9s08dz32amlfr Freescale Semiconductor, Inc, mc9s08dz32amlfr Datasheet - Page 346
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mc9s08dz32amlfr
Manufacturer Part Number
mc9s08dz32amlfr
Description
Hcs08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S08DZ32AMLFR.pdf
(458 pages)
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Chapter 15 Real-Time Counter (S08RTCV1)
15.1.4
The block diagram for the RTC module is shown in
15.2
The RTC does not include any off-chip signals.
15.3
The RTC includes a status and control register, an 8-bit counter register, and an 8-bit modulo register.
Refer to the direct-page register summary in the memory section of this document for the absolute address
assignments for all RTC registers.This section refers to registers and control bits only by their names and
relative address offsets.
Table 15-1
346
Background
Mode
ERCLK
IRCLK
LPO
External Signal Description
Register Definition
RTCMOD
RTCCNT
RTCSC
is a summary of RTC registers.
Block Diagram
Name
RTCLKS[0]
Prescaler
Divide-By
Source
RTCLKS
Select
Clock
Figure 15-2. Real-Time Counter (RTC) Block Diagram
RTCPS
W
W
W
R
R
R
Clock
MC9S08DZ128 Series Data Sheet, Rev. 1
RTC
Table 15-1. RTC Register Summary
RTIF
7
8-Bit Comparator
6
8-Bit Counter
RTCLKS
8-Bit Modulo
(RTCMOD)
(RTCCNT)
Figure
5
15-2.
RTIE
4
RTCMOD
RTCCNT
V
DD
E
Write 1 to
D
RTIF
R
3
Q
RTIE
2
Freescale Semiconductor
RTCPS
RTIF
1
Interrupt
Request
RTC
0
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