MC68HC05K1 FREESCALE [Freescale Semiconductor, Inc], MC68HC05K1 Datasheet - Page 74

• Manufacturer Part Number: MC68HC05K1
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Technical Data
7.4.4 Port B Logic
Technical Data
WRITE $0005
WRITE $0001
WRITE $0011
WRITE $0005
WRITE $0001
WRITE $0011
READ $0005
READ $0001
READ $0005
READ $0001
RESET
Figure 7-8
Freescale Semiconductor, Inc.
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DATA DIRECTION
DATA DIRECTION
PORT B DATA
PORT B DATA
REGISTER B
REGISTER B
REGISTER B
REGISTER B
BIT (DDRB1)
PULLDOWN
BIT (DDRB0)
PULLDOWN
REGISTER
BIT (PDIB1)
REGISTER
BIT (PDIB0)
BIT (PB1)
BIT (PB0)
RC OSCILLATOR
(MASK OPTION)
3-PIN RC OSCILLATOR
PULLDOWNS ENABLED
Figure 7-8. Port B I/O Circuit
(MASK OPTION)
(MASK OPTION)
shows the port B I/O logic.
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Parallel Input/Output (I/O)
(ACTIVE LOW)
MC68HC05K0 • MC68HC05K1 — Rev. 2.0
OSCILLATOR
TO 3-PIN
100-mA
PULLDOWN
DEVICE
100-mA
PULLDOWN
DEVICE
OSC3
PB1/
PB0