mc68hc05j1avp Freescale Semiconductor, Inc, mc68hc05j1avp Datasheet - Page 70

• Manufacturer Part Number: mc68hc05j1avp
• Description: M68hc05 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Parallel Input/Output (I/O)
Technical Data
70
Pulldown
1. X = Don’t care
2. U = Undefined
Option
Mask
Yes
Yes
Yes
Yes
No
No
PDIBx
X
Control Bits
X
0
0
1
1
(1)
READ $0005
WRITE $0005
WRITE $0001
READ $0001
WRITE $0011
RESET
DDRBx
0
1
0
1
0
1
Freescale Semiconductor, Inc.
For More Information On This Product,
pulldown on
pulldown on
Table 7-2. Port B Pin Functions
Output,
I/O Pin
Output
Output
Mode
Input,
Input,
Input,
DATA DIRECTION
Figure 7-8. Port B I/O Circuit
hi-z
hi-z
PORT B DATA
REGISTER B
REGISTER B
PULLDOWN
REGISTER
BIT DDRBx
BIT PDIBx
BIT PBx
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Parallel Input/Output (I/O)
PULLDOWN DEVICES ENABLED
Read
(MASK OPTION)
U
U
U
U
U
U
(2)
Accesses
to PDRB
PDIB7–PDIB0 DDRB7–DDRB0
PDIB7–PDIB0 DDRB7–DDRB0 PB7–PB0 PB7–PB0
PDIB7–PDIB0 DDRB7–DDRB0
PDIB7–PDIB0 DDRB7–DDRB0 PB7–PB0 PB7–PB0
PDIB7–PDIB0 DDRB7–DDRB0
PDIB7–PDIB0 DDRB7–DDRB0 PB7–PB0 PB7–PB0
Write
Read/Write
Accesses
to DDRB
MC68HC05J1A — Rev. 3.0
100- A
PULLDOWN
DEVICE
Read
Pin
Pin
Pin
PBx
to PORTB
Accesses
MOTOROLA
PB7–PB0
PB7–PB0
PB7–PB0
Write