Datasheet

I/O Section
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
Freescale Semiconductor 43
All registers are shown for both MC68HC908AS60A and MC68HC908AZ60A. Refer to individual module
chapters to determine if the module is available and the register active or not.
$0043
Timer B Modulo Register
High (TBMODH)
Read:
Bit 15 14 13 12 11 10 9 Bit 8
Write:
$0044
Timer B Modulo Register
Low (TBMODL)
Read:
Bit 7 6 5 4 3 2 1 Bit 0
Write:
$0045
Timer B CH0 Status and
Control Register (TBSC0)
Read: CH0F
CH0IE MS0B MS0A ELS0B ELS0A TOV0 CH0MAX
Write: 0
$0046
Timer B CH0 Register
High (TBCH0H)
Read:
Bit 15 14 13 12 11 10 9 Bit 8
Write:
$0047
Timer B CH0 Register
Low (TBCH0L)
Read:
Bit 7 6 5 4 3 2 1 Bit 0
Write:
$0048
Timer B CH1 Status and
Control Register (TBSC1)
Read: CH1F
CH1IE
0
MS1A ELS1B ELS1A TOV1 CH1MAX
Write: 0 R
$0049
Timer B CH1 Register High
(TBCH1H)
Read:
Bit 15 14 13 12 11 10 9 Bit 8
Write:
$004A
Timer B CH1 Register Low
(TBCH1L)
Read:
Bit 7 6 5 4 3 2 1 Bit 0
Write:
$004B
PIT Status and Control
Register (PSC)
Read: POF
POIE PSTOP
00
PPS2 PPS1 PPS0
Write: 0 PRST
$004C
PIT Counter Register High
(PCNTH)
Read: Bit 15 14 13 12 11 10 9 Bit 8
Write:
$004D
PIT Counter Register Low
(PCNTL)
Read:Bit 7654321Bit 0
Write:
$004E
PIT Modulo Register High
(PMODH)
Read:
Bit 15 14 13 12 11 10 9 Bit 8
Write:
$004F
PIT Modulo Register Low
(PMODL)
Read:
Bit 7 6 5 4 3 2 1 Bit 0
Write:
Addr.Register Name Bit 7654321Bit 0
= Unimplemented R = Reserved
Figure 2-2. I/O Data, Status and Control Registers (Sheet 5 of 5)