Datasheet

Memory
MC68HC908JL3E Family Data Sheet, Rev. 4
24 Freescale Semiconductor
$001A
Keyboard Status and Control
Register (KBSCR)
Read:0000KEYF0
IMASKK MODEK
Write: ACKK
Reset:00000000
$001B
Keyboard Interrupt Enable
Register (KBIER)
Read: 0
KBIE6 KBIE5 KBIE4 KBIE3 KBIE2 KBIE1 KBIE0
Write:
Reset:00000000
$001C
Unimplemented
Read:
Write:
$001D
IRQ Status and Control
Register
(INTSCR)
Read:0000IRQF0
IMASK MODE
Write:
ACK
Reset:00000000
$001E
Configuration Register 2
(CONFIG2)
†
Read:
IRQPUDRRLVIT1LVIT0RRR
Write:
Reset:0000*0*000
$001F
Configuration Register 1
(CONFIG1)
†
Read:
COPRS R R LVID R SSREC STOP COPD
Write:
Reset:00000000
† One-time writable register after each reset. * LVIT1 and LVIT0 reset to 0 by a power-on reset (POR) only.
$0020
TIM Status and Control
Register (TSC)
Read: TOF
TOIE TSTOP
00
PS2 PS1 PS0
Write: 0 TRST
Reset:00100000
$0021
TIM Counter Register High
(TCNTH)
Read: Bit15 Bit14 Bit13 Bit12 Bit11 Bit10 Bit9 Bit8
Write:
Reset:00000000
$0022
TIM Counter Register
Low (TCNTL)
Read: Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
Write:
Reset:00000000
$0023
TIM Counter Modulo Register
High (TMODH)
Read:
Bit15 Bit14 Bit13 Bit12 Bit11 Bit10 Bit9 Bit8
Write:
Reset:11111111
$0024
TIM Counter Modulo Register
Low (TMODL)
Read:
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
Write:
Reset:11111111
$0025
TIM Channel 0 Status and
Control Register (TSC0)
Read: CH0F
CH0IE MS0B MS0A ELS0B ELS0A TOV0 CH0MAX
Write: 0
Reset:00000000
$0026
TIM Channel 0 Register High
(TCH0H)
Read:
Bit15 Bit14 Bit13 Bit12 Bit11 Bit10 Bit9 Bit8
Write:
Reset: Indeterminate after reset
Addr.Register Name Bit 7654321Bit 0
= Unimplemented R = Reserved
Figure 2-2. Control, Status, and Data Registers (Sheet 2 of 4)