Freescale Semiconductor, Inc.
Memory
Input/Output Registers
Address
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
$0009
$000A
$000B
$000C
$000D
$000E
$000F
$0010
$0011
$0012
$0013
$0014
$0015
$0016
$0017
$0018
$0019
$001A
$001B
$001C
$001D
$001E
$001F
Register Name
Port A Data Register
Port B Data Register
Port C Data Register *
Analog MUX Register
Port A Data Direction Register
Port B Data Direction Register
Port C Data Direction Register *
Unused
Core Timer Status & Control Register
Core Timer Counter
Serial Control Register
Serial Status Register
Serial Data Register
IRQ Status & Control Register
Personality EPROM Bit Select Register
Personality EPROM Status & Control Register
Port A and Port C Pulldown Register *
Port B Pulldown Register
Timer Control Register
Timer Status Register
Input Capture Register (MSB)
Input Capture Register (LSB)
Output Compare Register (MSB)
Output Compare Register (LSB)
Timer Counter Register (MSB)
Timer Counter Register (LSB)
Alternate Counter Register (MSB)
Alternate Counter Register (LSB)
EPROM Programming Register
Analog Control Register
Analog Status Register
Reserved
Figure 2-2. I/O Registers
* Features related to port C are only available on the 28-pin MC68HC705JP7 devices.
MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0
General Release Specification
Memory
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