MCHC908GR8VFAE Freescale Semiconductor, MCHC908GR8VFAE Datasheet - Page 209

• Manufacturer Part Number: MCHC908GR8VFAE
• Description: IC MCU 8K FLASH 8MHZ 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCHC908GR8VFAE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• Program Memory Size: 7.5KB (7.5K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

16.3 Port A
16.3.1 Port A Data Register
MC68HC908GR8 — Rev 4.0
MOTOROLA
Function:
Alternate
Address:
Port A is an 4-bit special-function port that shares all four of its pins with
the keyboard interrupt (KBI) module. Port A also has software
configurable pullup devices if configured as an input port.
The port A data register (PTA) contains a data latch for each of the four
port A pins.
PTA3–PTA0 — Port A Data Bits
KBD3–KBD0 — Keyboard Inputs
Reset:
Read:
Write:
These read/write bits are software programmable. Data direction of
each port A pin is under the control of the corresponding bit in data
direction register A. Reset has no effect on port A data.
The keyboard interrupt enable bits, KBIE3–KBIE0, in the keyboard
interrupt control register (KBICR) enable the port A pins as external
interrupt pins. See
Freescale Semiconductor, Inc.
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Figure 16-2. Port A Data Register (PTA)
Input/Output Ports (I/O)
6
0
Keyboard Interrupt
5
0
Unaffected by reset
4
0
KBD3
PTA3
(KBI).
3
KBD2
PTA2
2
Input/Output Ports (I/O)
KBD1
PTA1
1
Technical Data
KBD0
PTA0
Bit 0
Port A
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