MC68HC908AB32CFU Freescale Semiconductor, MC68HC908AB32CFU Datasheet - Page 333

• Manufacturer Part Number: MC68HC908AB32CFU
• Description: IC MCU 8MHZ 32K FLASH 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908AB32CFU

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM
• Number Of I /o: 51
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

17.9.2 Data Direction Register G (DDRG)
MC68HC908AB32
Freescale Semiconductor
Alternative Function:
—
Rev. 1.1
Address:
Address:
PTG[2:0] — Port G Data Bits
KBD[2:0] — The keyboard interrupt enable bits, KBIE[2:0], in the
keyboard interrupt enable register (KBIER), enable the port G pins as
external interrupt pins. See
(KBI).
Data direction register G determines whether each port G pin is an input
or an output. Writing logic 1 to a DDRG bit enables the output buffer for
the corresponding port G pin; a logic 0 disables the output buffer.
Reset:
Reset:
Read:
Read:
Write:
Write:
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 port G data.
$000A
$000E
Bit 7
Figure 17-22. Port G Data Register (PTG)
Bit 7
Figure 17-23. Data Direction Register G (DDRG)
0
0
0
Input/Output (I/O) Ports
6
0
6
0
0
5
0
5
0
0
Section 19. Keyboard Interrupt Module
Unaffected by reset
4
0
4
0
0
3
0
3
0
0
DDRG2
PTG2
KBD2
2
2
0
Input/Output (I/O) Ports
DDRG1
PTG1
KBD1
1
1
0
Technical Data
DDRG0
PTG0
KBD0
Bit 0
Bit 0
0
333