MC68HC908AB32CFU Freescale Semiconductor, MC68HC908AB32CFU Datasheet - Page 335

• 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

17.10 Port H
17.10.1 Port H Data Register (PTH)
17.10.2 Data Direction Register H (DDRH)
MC68HC908AB32
Freescale Semiconductor
Alternative Function:
—
Rev. 1.1
Address:
Port H is a 2-bit special-function port that shares all two of its pins with
the keyboard interrupt (KBI) module.
The port H data register (PTH) contains a data latch for each of the two
port H pins.
PTH[1:0] — Port H Data Bits
KBD[4:3] — The keyboard interrupt enable bits, KBIE[4:3], in the
keyboard interrupt enable register (KBIER), enable the port H pins as
external interrupt pins. See
(KBI).
Data direction register H determines whether each port H pin is an input
or an output. Writing logic 1 to a DDRH bit enables the output buffer for
the corresponding port H pin; a logic 0 disables the output buffer.
Reset:
Read:
Write:
These read/write bits are software programmable. Data direction of
each port H pin is under the control of the corresponding bit in data
direction register H. Reset has no effect on port H data.
$000B
Bit 7
Figure 17-25. Port H Data Register (PTH)
0
Input/Output (I/O) Ports
6
0
5
0
Section 19. Keyboard Interrupt Module
Unaffected by reset
4
0
3
0
2
0
Input/Output (I/O) Ports
PTH1
KBD4
1
Technical Data
PTH0
KBD3
Bit 0
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