XC68HC705JJ7 Motorola, XC68HC705JJ7 Datasheet - Page 97

• Manufacturer Part Number: XC68HC705JJ7
• Description: MICROCONTROLLER
• Manufacturer: Motorola

MC68HC705JJ7 • MC68HC705JP7 — REV 4
MOTOROLA
WRITE $0005
WRITE $0001
WRITE $0011
READ $0005
READ $0001
RESET
SERIAL DATA OUT (SDO)
3. If the SIOP function is terminated by clearing the SPE bit in the
4. If the PB5/SDO pin is to be a digital input, then both the SPE bit in
5. If the PB5/SDO pin is to be a digital output, then the SPE bit in the
SERIAL ENABLE (SPE)
Figure 7-10. PB5/SDO Pin I/O Circuit
R
R
SCR, then the last conditions stored in the DDRB5, PDIB5, and
PB5 register bits will then control the PB5/SDO pin.
the SCR and the DDRB5 bit must be cleared. Depending on the
external application, the pulldown device may also be disabled by
setting the PDIB5 pulldown inhibit bit.
SCR must be cleared and the PDIB5 bit must be set. The pulldown
device will be disabled in this case.
PORT B DATA
REGISTER
DATA DIRECTION
BIT PB5
REGISTER B
REGISTER B
PULLDOWN
BIT DDRB5
BIT PDIB5
Parallel Input/Output
V
MASK OPTION REG. ($1FF1)
DD
Advance Information
Parallel Input/Output
PULLDOWN
DEVICE
SDO
PB5
Port B
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