MC68HRC908JK3CP Freescale Semiconductor, MC68HRC908JK3CP Datasheet - Page 163

• Manufacturer Part Number: MC68HRC908JK3CP
• Description: IC MCU FLASH 8B 8MHZ RC 4K 20DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

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: -

13.4.1 IRQ1 Pin
MC68H(R)C908JL3
Freescale Semiconductor
Addr.
$001D
IRQPUD
IRQ Status and Control
IRQ1
Register Name
DECODER
NOTE:
VECTOR
RESET
FETCH
ACK1
V
DD
I
PULLUP
DEVICE
NTERNAL
—
(INTSCR)
Register
Rev. 1.1
The interrupt mask (I) in the condition code register (CCR) masks all
interrupt requests, including external interrupt
Exception
A logic zero on the IRQ1 pin can latch an interrupt request into the IRQ1
latch. A vector fetch, software clear, or reset clears the IRQ1 latch.
If the MODE1 bit is set, the IRQ1 pin is both falling-edge-sensitive and
low-level-sensitive. With MODE1 set, both of the following actions must
occur to clear IRQ1:
Reset:
Read:
Write:
Figure 13-2. IRQ I/O Register Summary
V
MODE1
DD
D
CK
Bit 7
IRQ1
CLR
0
0
FF
Control.)
Q
External Interrupt (IRQ)
Figure 13-1. IRQ Module Block Diagram
= Unimplemented
6
0
0
5
0
0
IMASK1
SYNCHRO-
VOLTAGE
DETECT
NIZER
4
0
0
HIGH
IRQF1
3
0
requests.(See 7.6
ACK1
IRQF1
2
0
0
External Interrupt (IRQ)
IMASK1
1
0
Technical Data
TO CPU FOR
BIL/BIH
INSTRUCTIONS
IRQ1
INTERRUPT
REQUEST
TO MODE
SELECT
LOGIC
MODE1
Bit 0
0
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