MC68HC05SU3A Datasheet, PDF (31/80 Pages) Freescale Semiconductor, Inc – Fully static chip design featuring the industry standard 8-bit M68HC05 core

Freescale Semiconductor, Inc.
4.5
I/O Registers Summary
Table 4-1 shows a summary of I/O registers for MC68HC05SU3A device.
Table 4-1 MC68HC05SU3A I/O Registers
Register Name
Port A Data
Address bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
4
$00 PA7 PA6 PA5 PA4 PA3 PA2 PA1 PA0 unaffected
Port B Data
$01 PB7 PB6 PB5 PB4 PB3 PB2 PB1 PB0 unaffected
Port C Data
$02 PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0 unaffected
Port D Data
$03 PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0 unaffected
Port A Data Direction
$04 DDRA7 DDRA6 DDRA5 DDRA4 DDRA3 DDRA2 DDRA1 DDRA0 0000 0000
Port B Data Direction
$05 DDRB7 DDRB6 DDRB5 DDRB4 DDRB3 DDRB2 DDRB1 DDRB0 0000 0000
Port C Data Direction
$06 DDRC7 DDRC6 DDRC5 DDRC4 DDRC3 DDRC2 DDRC1 DDRC0 0000 0000
Port D Data Direction
$07 DDRD7 DDRD6 DDRD5 DDRD4 DDRD3 DDRD2 DDRD1 DDRD0 0000 0000
Timer Data (TDR)
$08 TD7 TD6 TD5 TD4 TD3 TD2 TD1 TD0 1111 1111
Timer Control (TCR)
$09 TIF TIM TCEX TINE PRER PR2 PR1 PR0 0100 -000
Port Option (POPR)
$0A
PIL PDP PCP PBP
--00 00--
KBI Mask (KBIM)
$0B KBE7 KBE6 KBE5 KBE4 KBE3 KBE2 KBE1 KBE0 0000 0000
Miscellaneous Control (MCR) $0C KBIE KBIC INTO INTE LVRE SM IRQ2F IRQ2E 0001 0000
Reserved
$0D
Reserved
$0E
Reserved
$0F
TPG
MC68HC05SU3A
MEMORY AND REGISTERS
For More Information On This Product,
4-3
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