mc68hc05l25 Freescale Semiconductor, Inc, mc68hc05l25 Datasheet - Page 67

• Manufacturer Part Number: mc68hc05l25
• Description: M68hc05 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
INTERNAL HC05
DATA BUS
WRITE OPTN: $0009
WRITE $0008
WRITE OPTN: $0002
WRITE $0002
READ OPTN: $000A
READ OPTN: $0009
READ $0009
READ $0008
READ OPTN: $0002
READ $0002
TO INTERRUPT
SYSTEM
RESET
(RST)
DATA DIRECTION
Figure 7-16. PC3/IRQ Circuitry
MC68HC05L25 Data Sheet, Rev. 3.1
REGISTER BIT
REGISTER BIT
REGISTER BIT
REGISTER BIT
Q
OPEN DRAIN
ENABLE BIT
PULLUP
IRQF
DATA
IRQ
S
R
Q
R
C
D
*NOTE: Open Drain Output
OUTPUT*
R PULLUP
PIN
I/O
Port C
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