MCR908JK1ECPE Freescale Semiconductor, MCR908JK1ECPE Datasheet - Page 114

• 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

External Interrupt (IRQ)
The vector fetch or software clear may occur before or after the interrupt pin returns to one. As long as
the pin is low, the interrupt request remains pending. A reset will clear the latch and the MODE control bit,
thereby clearing the interrupt even if the pin stays low.
When set, the IMASK bit in the INTSCR mask all external interrupt requests. A latched interrupt request
is not presented to the interrupt priority logic unless the IMASK bit is clear.
114
Addr.
$001D
IRQPUD
IRQ
IRQ Status and Control
Register Name
DECODER
Register (INTSCR)
VECTOR
RESET
FETCH
The interrupt mask (I) in the condition code register (CCR) masks all
interrupt requests, including external interrupt requests. See
Control.
ACK
V
INTERNAL
PULLUP
DEVICE
DD
Reset:
Read:
Write:
Figure 11-2. IRQ I/O Register Summary
V
MODE
Figure 11-1. IRQ Module Block Diagram
DD
MC68HC908JL3E Family Data Sheet, Rev. 4
D
CK
Bit 7
IRQ
CLR
0
0
FF
Q
= Unimplemented
6
0
0
NOTE
5
0
0
IMASK
SYNCHRO-
VOLTAGE
DETECT
NIZER
4
0
0
HIGH
IRQF
3
0
5.5 Exception
IRQF
ACK
2
0
0
Freescale Semiconductor
IMASK
1
0
TO CPU FOR
BIL/BIH
INSTRUCTIONS
IRQ
INTERRUPT
REQUEST
TO MODE
SELECT
LOGIC
MODE
Bit 0
0