Datasheet

Block Diagram
MC68HC812A4 Data Sheet, Rev. 7
Freescale Semiconductor 119
Addr.Register Name Bit 7654321Bit 0
$0080
Timer IC/OC Select
Register (TIOS)
See page 125.
Read:
IOS7 IOS6 IOS5 IOS4 IOS3 IOS2 IOS1 IOS0
Write:
Reset:00000000
$0081
Timer Compare Force
Register (CFORC)
See page 125.
Read:
FOC7 FOC6 FOC5 FOC4 FOC3 FOC2 FOC1 FOC0
Write:
Reset:00000000
$0082
Timer Output
Compare 7 Mask Register
(OC7M)
See page 126.
Read:
OC7M7OC7M6OC7M5OC7M4OC7M3OC7M2OC7M1OC7M0
Write:
Reset:00000000
$0083
Timer Output
Compare 7 Data Register
(OC7D)
See page 126.
Read:
OC7D7 OC7D6 OC7D5 OC7D4 OC7D3 OC7D2 OC7D1 OC7D0
Write:
Reset:00000000
$0084
Timer Counter Register
High (TCNTH)
See page 127.
Read: Bit 15 14 13 12 11 10 9 Bit 8
Write:
Reset:00000000
$0085
Timer Counter Register
Low (TCNTL)
See page 127.
Read: Bit 7 6 5 4321Bit 0
Write:
Reset:00000000
$0086
Timer System Control
Register (TSCR)
See page 127.
Read:
TEN TSWAI TSBCK TFFCA
0000
Write:
Reset:00000000
$0087 Reserved RRRRRRRR
$0088
Timer Control
Register 1 (TCTL1)
See page 129.
Read:
OM7OL7OM6OL6OM5OL5OM4OL4
Write:
Reset:00000000
$0089
Timer Control
Register 2 (TCTL2)
See page 129.
Read:
OM3OL3OM2OL2OM1OL1OM0OL0
Write:
Reset:00000000
$008A
Timer Control
Register 3 (TCTL3)
See page 130.
Read:
EDG7B EDG7A EDG6B EDG6A EDG5B EDG5A EDG4B EDG4A
Write:
Reset:00000000
$008B
Timer Control
Register 4 (TCTL4)
See page 130.
Read:
EDG3B EDG3A EDG2B EDG2A EDG1B EDG1A EDG0B EDG0A
Write:
Reset:00000000
$008C
Timer Mask Register 1
(TMSK1)
See page 130.
Read:
C7IC6IC5IC4IC3IC2IC1IC0I
Write:
Reset:00000000
= Unimplemented R = Reserved
Figure 12-2. I/O Register Summary (Sheet 1 of 4)