MC908MR8MPE Freescale Semiconductor, MC908MR8MPE Datasheet - Page 283

• 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: -

MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
When bit DDRAx is a logic 1, reading address $0000 reads the PTAx
data latch. When bit DDRAx is a logic 0, reading address $0000 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 A pins.
1. X = don’t care
2. Hi-Z = high impedance
3. Writing affects data register, but does not affect input.
DDRA
Bit
0
1
READ DDRA ($0004)
WRITE DDRA ($0004)
WRITE PTA ($0000)
READ PTA ($0000)
Input/Output (I/O) Ports
PTA
X
Bit
X
(1)
Table 14-1. Port A Pin Functions
Figure 14-4. Port A I/O Circuit
RESET
Input, Hi-Z
I/O Pin
Output
Mode
(2)
DDRAx
PTAx
Read/Write
DDRA[6:0]
DDRA[6:0]
Accesses
to DDRA
Table 14-1
PTA[6:0]
Read
Accesses to PTA
Input/Output (I/O) Ports
Pin
summarizes
Technical Data
PTA[6:0]
PTA[6:0]
Write
Port A
PTAx
(3)
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