MC908JL16CPE Freescale Semiconductor, MC908JL16CPE Datasheet - Page 143

• Manufacturer Part Number: MC908JL16CPE
• Description: IC MCU 16K FLASH 8MHZ 28-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908JL16CPE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 23
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Controller Family/series: HC08
• No. Of I/o's: 23
• Ram Memory Size: 512Byte
• Cpu Speed: 8MHz
• No. Of Timers: 2
• Embedded Interface Type: I2C, SCI
• Rohs Compliant: Yes
• Processor Series: HC08JL
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SCI
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 23
• Number Of Timers: 4
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Development Tools By Supplier: FSICEBASE, DEMO908JL16E, M68CBL05CE
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 12 Channel
• For Use With: DEMO908JL16E - BOARD DEMO FOR MC908JL16
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

10.3 Port B
Port B is an 8-bit special function port that shares all of its port pins with the analog-to-digital converter
(ADC) module (see
10.3.1 Port B Data Register (PTB)
The port B data register contains a data latch for each of the eight port B pins.
PTB[7:0] — Port B Data Bits
ADC7–ADC0 — ADC channels 7 to 0
10.3.2 Data Direction Register B (DDRB)
Data direction register B determines whether each port B pin is an input or an output. Writing a logic 1 to
a DDRB bit enables the output buffer for the corresponding port B pin; a logic 0 disables the output buffer.
DDRB[7:0] — Data Direction Register B Bits
Freescale Semiconductor
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.
ADC7–ADC0 are pins used for the input channels to the analog-to-digital converter module. The
channel select bits, ADCH[4:0], in the ADC status and control register define which port pin will be used
as an ADC input. See
These read/write bits control port B data direction. Reset clears DDRB[7:0], configuring all port B pins
as inputs.
1 = Corresponding port B pin configured as output
0 = Corresponding port B pin configured as input
Alternative Functions:
Address: $0005
When a pin is to be used as an ADC channel, the user must make sure that
any pin that is shared with another module is disabled and pin is configured
as input port.
Reset:
Read:
Write:
Address: $0001
Chapter 9 Analog-to-Digital Converter
Reset:
Read:
Write:
DDRB7
Bit 7
0
Chapter 9 Analog-to-Digital Converter
Figure 10-8. Data Direction Register B (DDRB)
PTB7
ADC7
Bit 7
Figure 10-7. Port B Data Register (PTB)
DDRB6
6
0
MC68HC908JL16 Data Sheet, Rev. 1.1
PTB6
ADC6
6
DDRB5
5
0
ADC5
PTB5
5
NOTE
DDRB4
4
0
Unaffected by reset
ADC4
PTB4
4
DDRB3
(ADC)).
3
0
ADC3
PTB3
(ADC).
3
DDRB2
2
0
ADC2
PTB2
2
DDRB1
1
0
ADC2
PTB1
1
DDRB0
Bit 0
0
PTB0
ADC0
Bit 0
Port B
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