MCR908JK1ECPE Freescale Semiconductor, MCR908JK1ECPE Datasheet - Page 105

• Manufacturer Part Number: MCR908JK1ECPE
• Description: IC MCU 1.5K FLASH 8MHZ 20-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCR908JK1ECPE

• 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-DIP (0.300", 7.62mm)
• Processor Series: HC08JK
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 15
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Development Tools By Supplier: FSICEBASE, DEMO908JL16E, M68CBL05CE
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 12 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

10.2 Port A
Port A is an 7-bit special function port that shares all seven of its pins with the keyboard interrupt (KBI)
module (see
pull-up device if the corresponding port pin is configured as input port. PTA0 to PTA5 has direct LED drive
capability.
10.2.1 Port A Data Register (PTA)
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
Freescale Semiconductor
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, KBIE[6:0], in the keyboard interrupt control register (KBIER) enable
the port A pins as external interrupt pins, (see
Additional Functions:
Chapter 12 Keyboard Interrupt Module
Address:
Reset:
Read:
Write:
PTA6 pin is available on MC68HRC908JL3E/JK3E/JK1E only.
PTA0–PTA5 pins are available on MC68H(R)C908JL3E only.
$0000
Bit 7
0
Figure 10-2. Port A Data Register (PTA)
MC68HC908JL3E Family Data Sheet, Rev. 4
= Unimplemented
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
Keyboard
Interrupt
(Sink)
PTA5
LED
5
NOTE
Chapter 12 Keyboard Interrupt Module
(KBI)). Each port A pin also has software configurable
Keyboard
Interrupt
Unaffected by Reset
(Sink)
PTA4
LED
4
Keyboard
Interrupt
(Sink)
PTA3
LED
3
Keyboard
Interrupt
(Sink)
PTA2
LED
2
Keyboard
Interrupt
(Sink)
PTA1
LED
1
Keyboard
(KBI)).
Interrupt
(Sink)
PTA0
Bit 0
LED
Port A
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