MC68HC908GR8CP Freescale Semiconductor, MC68HC908GR8CP Datasheet - Page 215

• Manufacturer Part Number: MC68HC908GR8CP
• Description: IC MCU FLASH 8BIT 8MHZ 4K 28-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GR8CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 17
• 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 ~ 85°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

MC68HC908GR8 — Rev 4.0
MOTOROLA
DDRB Bit
Notes:
1. X = Don’t care
2. Hi-Z = High impedance
3. Writing affects data register, but does not affect input.
0
1
PTB Bit
X
X
(1)
When bit DDRBx is a logic 1, reading address $0001 reads the PTBx
data latch. When bit DDRBx is a logic 0, reading address $0001 reads
the voltage level on the pin. The data latch can always be written,
regardless of the state of its data direction bit.
the operation of the port B pins.
Freescale Semiconductor, Inc.
I/O Pin Mode
Input, Hi-Z
For More Information On This Product,
Output
Table 16-3. Port B Pin Functions
READ DDRB ($0005)
WRITE DDRB ($0005)
WRITE PTB ($0001)
READ PTB ($0001)
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(2)
Input/Output Ports (I/O)
Figure 16-8. Port B I/O Circuit
RESET
DDRB5–DDRB0
DDRB5–DDRB0
Read/Write
Accesses
to DDRB
DDRBx
PTBx
PTB5–PTB0
Read
Pin
Table 16-3
Accesses to PTB
Input/Output Ports (I/O)
PTB5–PTB0
PTB5–PTB0
summarizes
Technical Data
Write
Port B
(3)
PTBx
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