MCHC908JK3CPE Freescale Semiconductor, MCHC908JK3CPE Datasheet - Page 151

• Manufacturer Part Number: MCHC908JK3CPE
• Description: IC MCU 4K FLASH 20-PDIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCHC908JK3CPE

• 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: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -

12.4 Port A Data Register (PTA)
MC68H(R)C908JL3
Freescale Semiconductor
Additional Functions:
—
Rev. 1.1
Address:
The port A data register (PTA) contains a data latch for each of the seven
port A pins.
PTA[6:0] — Port A Data Bits
KBI[6:0] — Port A Keyboard Interrupts
Reset:
Read:
Write:
These read/write bits are software programmable. Data direction of
each port A pin is under the control of the corresponding bit in data
direction register A. Reset has no effect on port A data.
The keyboard interrupt enable bits, KBIE6-KBIE0, in the keyboard
interrupt control register (KBAIER) enable the port A pins as external
interrupt pins, (see
$0000
Bit 7
0
Figure 12-2. Port A Data Register (PTA)
30k pull-up 30k pull-up 30k pull-up 30k pull-up 30k pull-up 30k pull-up 30k pull-up
Keyboard
Interrupt
PTA6
6
I/O Ports
Section 14. Keyboard Interrupt Module
Keyboard
Interrupt
(Sink)
PTA5
LED
5
Keyboard
Unaffected by Reset
Interrupt
(Sink)
PTA4
LED
4
Keyboard
Interrupt
(Sink)
PTA3
LED
3
Keyboard
Interrupt
(Sink)
PTA2
LED
2
Keyboard
Interrupt
(Sink)
PTA1
LED
1
Technical Data
I/O Ports
Keyboard
(KBI)).
Interrupt
(Sink)
PTA0
Bit 0
LED
149