Motorola MC68HC908AB32 User Manual

Memory Map
Technical Data MC68HC908AB32 — Rev. 1.0
48 Memory Map MOTOROLA
$001E
PLL Programming
Register
(PPG)
Read:
MUL7 MUL6 MUL5 MUL4 VRS7 VRS6 VRS5 VRS4
Write:
Reset: 01100110
$001F
Configuration Register 1
(CONFIG1)
†
Read:
LVISTOP R LVIRSTD LVIPWRD SSREC COPRS STOP COPD
Write:
Reset: 00000000
† One-time writable register after each reset.
$0020
Timer A Status and
Control Register
(TASC)
Read: TOF
TOIE TSTOP
00
PS2 PS1 PS0
Write: 0 TRST
Reset: 00100000
$0021
Keyboard Interrupt Enable
Register
(KBIER)
Read: 0 0 0
KBIE4 KBIE3 KBIE2 KBIE1 KBIE0
Write:
Reset: 00000000
$0022
Timer A Counter
Register High
(TACNTH)
Read: Bit 15 14 13 12 11 10 9 Bit 8
Write:
Reset: 00000000
$0023
Timer A Counter
Register Low
(TACNTL)
Read: Bit 7 654321Bit 0
Write:
Reset: 00000000
$0024
Timer A Counter Modulo
Register High
(TAMODH)
Read:
Bit 15 14 13 12 11 10 9 Bit 8
Write:
Reset: 11111111
$0025
Timer A Counter Modulo
Register Low
(TAMODL)
Read:
Bit 7 654321Bit 0
Write:
Reset: 11111111
$0026
Timer A Channel 0 Status
and Control Register
(TASC0)
Read: CH0F
CH0IE MS0B MS0A ELS0B ELS0A TOV0 CH0MAX
Write: 0
Reset: 00000000
$0027
Timer A Channel 0
Register High
(TACH0H)
Read:
Bit 15 14 13 12 11 10 9 Bit 8
Write:
Reset: Indeterminate after reset
Addr. Register Name Bit 7 654321Bit 0
= Unimplemented R = Reserved
Figure 2-2. Control, Status, and Data Registers (Sheet 4 of 11)

Motorola MC68HC908AB32 Specifications

General

Brand	Motorola
Model	MC68HC908AB32
Category	Controller
Language	English