MC68HC705K1 Datasheet, PDF (72/140 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Parallel Input/Output (I/O)
READ $0005
WRITE $0005
DATA DIRECTION
REGISTER B
BIT DDRB1
TO 3-PIN OSCILLATOR
WRITE $0001
READ $0001
WRITE $0011
PORT B DATA
REGISTER
BIT PB1
PULLDOWN
REGISTER B
BIT PDIB1
PB1/
OSC3
100-µA
PULLDOWN
DEVICE
MASK OPTION REGISTER ($0017)
READ $0005
WRITE $0005
WRITE $0001
READ $0001
WRITE $0011
RESET
DATA DIRECTION
REGISTER B
BIT DDRB0
PORT B DATA
REGISTER
BIT PB0
PULLDOWN
REGISTER B
BIT PDIB0
Figure 7-8. Port B I/O Circuit
PB0
100-µA
PULLDOWN
DEVICE
Technical Data
Parallel Input/Output (I/O)
For More Information On This Product,
Go to: www.freescale.com
MC68HC705K1 — Rev. 2.0