XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 362

• Manufacturer Part Number: XC908AS60ACFU
• Description: MC68HC908AZ60A, MC68HC908AS60A Hcmos Microcontroller Unit Technical Data
• Manufacturer: Motorola Semiconductor Products

Input/Output Ports
Technical Data
362
When bit DDRCx is a logic 1, reading address $0002 reads the PTCx
data latch. When bit DDRCx is a logic 0, reading address $0002 reads
the voltage level on the pin. The data latch can always be written,
regardless of the state of its data direction bit.
the operation of the port C pins.
X = don’t care
Hi-Z = high impedance
1. Writing affects data register, but does not affect input.
Value
Bit
0
1
0
1
READ DDRC ($0006)
WRITE DDRC ($0006)
WRITE PTC ($0002)
READ PTC ($0002)
PTC
Bit
X
X
2
2
Input/Output Ports
Table 22-3. Port C Pin Functions
Figure 22-10. Port C I/O Circuit
RESET
Input, Hi-Z
Input, Hi-Z
I/O Pin
Output
Output
Mode
DDRCx
PTCx
Read/Write
DDRC[5:0]
DDRC[5:0]
Accesses
to DDRC
DDRC[2]
DDRC[2]
MC68HC908AZ60A — Rev 2.0
Table 22-3
PTC[5:0]
Read
Accesses to PTC
Pin
Pin
0
summarizes
MOTOROLA
PTC[5:0]
PTC[5:0]
Write
PTC2
—
PTCx
(1)