MC908MR8MPE Freescale Semiconductor, MC908MR8MPE Datasheet - Page 284

• Manufacturer Part Number: MC908MR8MPE
• Description: IC MCU 8BIT 8K FLASH 28-PDIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908MR8MPE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 12
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Input/Output (I/O) Ports
14.4 Port B
14.4.1 Port B Data Register
Technical Data
284
Port B is a 7-bit general-purpose bidirectional I/O port that shares its pins
with the serial communications interface (SCI) module.
The port B data register (PTB) contains a data latch for each of the eight
port B pins.
Reset:
PTB[6:0] — Port B Data Bits
dress:
Read:
Write:
Ad-
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.
$0001
Bit 7
Figure 14-5. Port B Data Register (PTB)
Input/Output (I/O) Ports
= Unimplemented
PTB6
6
PTB5
5
Unaffected by reset
PTB4
4
PTB3
3
MC68HC908MR8 — Rev 4.1
PTB2
Freescale Semiconductor
2
PTB1
1
PTB0
Bit 0