MC68HRC908JK3CP Freescale Semiconductor, MC68HRC908JK3CP Datasheet - Page 153
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MC68HRC908JK3CP
Manufacturer Part Number
MC68HRC908JK3CP
Description
IC MCU FLASH 8B 8MHZ RC 4K 20DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908JK1CDW.pdf
(212 pages)
Specifications of MC68HRC908JK3CP
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
Contains lead / RoHS non-compliant
Eeprom Size
-
Connectivity
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68HRC908JK3CP
Manufacturer:
FREECAL
Quantity:
20 000
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- Download datasheet (3Mb)
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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