MCHC908JK3CPE Freescale Semiconductor, MCHC908JK3CPE Datasheet - Page 155

• Manufacturer Part Number: MCHC908JK3CPE
• Description: IC MCU 4K FLASH 20-PDIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCHC908JK3CPE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 15
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 12x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -

12.5 Port B
12.5.1 Port B Data Register (PTB)
12.5.2 Data Direction Register B (DDRB)
MC68H(R)C908JL3
Freescale Semiconductor
Alternative Function:
—
Rev. 1.1
Address:
Address:
Port B is an 8-bit special function port that shares all eight of its port pins
with the Analog-to-Digital converter (ADC) module, See
The port B data register contains a data latch for each of the eight port B
pins.
PTB[7:0] — Port B Data Bits
Data direction register B determines whether each port B pin is an input
or an output. Writing a logic one to a DDRB bit enables the output buffer
for the corresponding port B pin; a logic zero disables the output buffer.
Reset:
Reset:
Read:
Read:
Write:
Write:
These read/write bits are software programmable. Data direction of
each port B pin is under the control of the corresponding bit in data
direction register B. Reset has no effect on port B data.
DDRB7
$0001
$0005
PTB7
ADC7
Bit 7
Bit 7
Figure 12-6. Port B Data Register (PTB)
0
Figure 12-7. Data Direction Register B (DDRB)
DDRB6
PTB6
ADC6
6
6
0
I/O Ports
DDRB5
ADC5
PTB5
5
5
0
Unaffected by reset
DDRB4
ADC4
PTB4
4
4
0
DDRB3
ADC3
PTB3
3
3
0
DDRB2
ADC2
PTB2
2
2
0
Section 11.
DDRB1
ADC2
PTB1
1
1
0
Technical Data
I/O Ports
DDRB0
PTB0
ADC0
Bit 0
Bit 0
0
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