MC68HC908AZ32ACFU MOTOROLA [Motorola, Inc], MC68HC908AZ32ACFU Datasheet - Page 385
MC68HC908AZ32ACFU
Manufacturer Part Number
MC68HC908AZ32ACFU
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AZ32ACFU.pdf
(468 pages)
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23.9 Port G
23.9.1 Port G Data Register
68HC908AZ32A — Rev 0.0
MOTOROLA
Function:
Alternate
Address:
Port G is a 3-bit special function port that shares all of its pins with the
keyboard interrupt module (KBD). Note that Port G is only available on
64-pin package options.
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
Figure 23-20. Port G Data Register (PTG)
Section 22. Keyboard Module
= Reserved
R
6
0
I/O Ports
R
5
0
Unaffected by Reset
R
4
0
R
3
0
(KBD)). Enabling an
PTG2
KBD2
2
Advance Information
PTG1
KBD1
1
I/O Ports
PTG0
KBD0
Bit 0
Port G
385
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