mc68hc908lj24 Freescale Semiconductor, Inc, mc68hc908lj24 Datasheet - Page 219

• Manufacturer Part Number: mc68hc908lj24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

12.4 I/O Pins
MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
†† Reset by POR only.
Addr.
$0040
$0041
$0042
$0043
$0044
$0045
Notes:
1. Do not enable the SPI function if the pin is used for RTC calibration.
RTC Calibration Control
RTC Control Register 1
RTC Control Register 2
Generic Pin Name
Alarm Minute Register
RTC Calibration Data
Register Name
RTC Status Register
CALOUT
CALIN
RTC
(RTCCOMR)
(RTCCDAT)
(RTCCR1)
(RTCCR2)
(RTCSR)
Register
Register
(ALMR)
Two RTC clock calibration pins are shared with standard port I/O pins.
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Figure 12-1. RTC I/O Register Summary
Table 12-1. Pin Name Conventions
U = Unaffected
COMEN
ALMIE
EOVL
ALMF
Bit 7
PTD3/SPSCK/CALOUT
R
U
U
0
0
0
0
0
0
Full MCU Pin Name
PTD0/SS/CALIN
Real Time Clock (RTC)
CHRCLR
CHRIE
CHRF
R
6
0
0
0
0
0
0
0
0
0
0
DAYIE
CHRE
DAYF
AM5
CAL
E5
U
U
5
0
0
0
0
(1)
AUTOCAL OUTF1
= Unimplemented
RTCE
HRIE
HRF
AM4
0
E4
U
U
4
0
0
0
††
Pin Selected for RTC Function by
Bits in RTCCOMR ($0040)
MINIE
MINF
AM3
TBH
E3
U
U
3
0
0
0
0
AUTOCAL
OUTF[1:0}
OUTF0
SECIE
SECF
AM2
E2
U
U
R
2
0
0
0
0
0
Real Time Clock (RTC)
RTCWE1 RTCWE0
= Reserved
TB1IE
TB1F
AM1
E1
U
U
1
0
0
0
0
0
0
Data Sheet
I/O Pins
TB2IE
TB2F
Bit 0
AM0
E0
U
U
0
0
0
0
0
0
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