MCR908JK1CDWE Freescale Semiconductor, MCR908JK1CDWE Datasheet - Page 153
MCR908JK1CDWE
Manufacturer Part Number
MCR908JK1CDWE
Description
IC MCU 1.5K FLASH 20-SOIC
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908JK1CDW.pdf
(212 pages)
Specifications of MCR908JK1CDWE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Peripherals
LED, LVD, POR, PWM
Number Of I /o
14
Program Memory Size
1.5KB (1.5K 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-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
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12.4.2 Port A Input Pull-up Enable Register (PTAPUE)
MC68H(R)C908JL3
Freescale Semiconductor
—
Rev. 1.1
When DDRAx is a logic 1, reading address $0000 reads the PTAx data
latch. When 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 Port A Input Pull-up Enable Register (PTAPUE) contains a software
configurable pull-up device for each if the seven port A pins. Each bit is
individually configurable and requires the corresponding data direction
register, DDRAx be configured as input. Each pull-up device is
automatically and dynamically disabled when its corresponding DDRAx
bit is configured as output.
READ DDRA ($0004)
WRITE DDRA ($0004)
WRITE PTA ($0000)
READ PTA ($0000)
Figure 12-4. Port A I/O Circuit
I/O Ports
RESET
DDRAx
PTAx
To Keyboard Interrupt Circuit
PTAPUEx
Technical Data
I/O Ports
30k
PTAx
151
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