mc68hc08az60 Freescale Semiconductor, Inc, mc68hc08az60 Datasheet - Page 299

• Manufacturer Part Number: mc68hc08az60
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

Port G
Port G Data
Register
21-ioports
MOTOROLA
Function:
Address:
Alternate
Port G is a 3-bit special function port that shares all of its pins with the
keyboard interrupt module (KBD).
The port G data register contains a data latch for each of the three port
G pins.
PTG[2:0] — Port G Data Bits
KBD[2:0] — Keyboard Wakeup pins
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
These read/write bits are software programmable. Data direction of
each port G pin is under the control of the corresponding bit in data
direction register G. Reset has no effect on PTG[2:0].
The keyboard interrupt enable bits, KBIE[2:0], in the keyboard
interrupt control register, enable the port G pins as external interrupt
pins (See
external interrupt pin will override the corresponding DDRGx.
For More Information On This Product,
$000A
Bit 7
R
R
0
Go to: www.freescale.com
Keyboard Module (KBD)
Figure 20. Port G Data Register (PTG)
= Reserved
R
6
0
I/O Ports
R
5
0
Unaffected by Reset
R
4
0
on page 355). Enabling an
R
3
0
MC68HC08AZ60 — Rev 1.0
PTG2
KBD2
2
PTG1
KBD1
1
I/O Ports
PTG0
KBD0
Bit 0
Port G
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