Datasheet

Register Map
MC68HC812A4 Data Sheet, Rev. 7
Freescale Semiconductor 37
$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:
OM7 OL7 OM6 OL6 OM5 OL5 OM4 OL4
Write:
Reset:00000000
$0089
Timer Control
Register 2 (TCTL2)
See page 129.
Read:
OM3 OL3 OM2 OL2 OM1 OL1 OM0 OL0
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:
C7I C6I C5I C4I C3I C2I C1I C0I
Write:
Reset:00000000
$008D
Timer Mask Register 2
(TMSK2)
See page 131.
Read:
TOI
0
PUPT RDPT TCRE PR2 PR1 PR0
Write:
Reset:00110000
$008E
Timer Flag Register 1
(TFLG1)
See page 132.
Read:
C7FC6FC5FC4FC3FC2FC1FC0F
Write:
Reset:00000000
$008F
Timer Flag Register 2
(TFLG2)
See page 132.
Read:
TOF
0000000
Write:
Reset:00000000
$0090
Timer Channel 0 Register
High (TC0H)
See page 133.
Read:
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8
Write:
Reset:00000000
$0091
Timer Channel 0 Register
Low (TC0L)
See page 133.
Read:
Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0
Write:
Reset:00000000
$0092
Timer Channel 1 Register
High (TC1H)
See page 133.
Read:
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8
Write:
Reset:00000000
Addr.Register Name Bit 7654321Bit 0
= Unimplemented
R
= Reserved U = Unaffected
Figure 2-1. Register Map (Sheet 9 of 14)