Datasheet

Register Map
MC68HC812A4 Data Sheet, Rev. 7
Freescale Semiconductor 39
$009F
Timer Channel 7 Register
Low (TC7L)
See page 133.
Read:
Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0
Write:
Reset:00000000
$00A0
Pulse Accumulator Control
Register (PACTL)
See page 134.
Read: 0
PAEN PAMOD PEDGE CLK1 CLK0 PAOVI PAI
Write:
Reset:00000000
$00A1
Pulse Accumulator Flag
Register (PAFLG)
See page 135.
Read:Bit 000000
PAOVF PAIF
Write:
Reset:00000000
$00A2
Pulse Accumulator
Counter Register High
(PACNTH)
See page 136.
Read:
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8
Write:
Reset:00000000
$00A3
Pulse Accumulator
Counter Register Low
(PACNTL)
See page 136.
Read:
Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0
Write:
Reset:00000000
$00A4 Reserved RRRRRRRR
↓↓
$00AC Reserved RRRRRRRR
$00AD
Timer Test Register
(TIMTST)
See page 137.
Read: 0 0 0 0 0 0 TCBYP PCBYP
Write:
Reset:00000000
$00AE
Timer Port Data Register
(PORTT)
See page 139.
Read:
PT7 PT6 PT5 PT4 PT3 PT2 PT1 PT0
Write:
Reset: Unaffected by reset
$00AF
Timer Port Data Direction
Register (DDRT)
See page 140.
Read:
Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0
Write:
Reset:00000000
$00B0 Reserved RRRRRRRR
↓↓
$00BF Reserved RRRRRRRR
$00C0
SCI 0 Baud Rate Register
High (SC0BDH)
See page 168.
Read:
BTST BSPL BRLD SBR12 SBR11 SBR10 SBR9 SBR8
Write:
Reset:00000000
$00C1
SCI 0 Baud Rate Register
Low (SC0BDL)
See page 168.
Read:
SBR7 SBR6 SBR5 SBR4 SBR3 SBR2 SBR1 SBR0
Write:
Reset:00000100
Addr.Register Name Bit 7654321Bit 0
= Unimplemented
R
= Reserved U = Unaffected
Figure 2-1. Register Map (Sheet 11 of 14)