mc68hc05l25 Freescale Semiconductor, Inc, mc68hc05l25 Datasheet - Page 50

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

Input/Output Ports (I/O)
50
INTERNAL HC05
INTERNAL HC05
DATA BUS
DATA BUS
WRITE $0000
WRITE $0000
WRITE OPTN:$0008
WRITE OPTN:$0000
WRITE OPTN:$0008
WRITE OPTN:$0000
READ $0000
READ $0000
READ OPTN:$0008
READ OPTN:$0000
READ OPTN:$0008
READ OPTN:$0000
RESET
RESET
(RST)
(RST)
Figure 7-1. Port A0:A2/KWI0:KWI2 I/O Circuitry
Figure 7-2. Port A3/KWI3/BZ I/O Circuitry
DATA DIRECTION
DATA DIRECTION
REGISTER BIT
REGISTER BIT
REGISTER BIT
REGISTER BIT
REGISTER BIT
REGISTER BIT
REGISTER BIT
REGISTER BIT
MC68HC05L25 Data Sheet, Rev. 3.1
SUBSYSTEM
PULLUP
PULLUP
BUZZER
DATA
DATA
KWI
KWI
PULLUP
PULLUP
LOGIC
LOGIC
*NOTE: OPEN DRAIN OUTPUT
OUTPUT*
OUTPUT*
*NOTE: OPEN DRAIN OUTPUT
Freescale Semiconductor
R PULLUP
R PULLUP
PIN
PIN
I/O
I/O