XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 369

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

22.8 Port F
MC68HC908AZ60A — Rev 2.0
MOTOROLA
When bit DDREx is a logic 1, reading address $0008 reads the PTEx
data latch. When bit DDREx is a logic 0, reading address $0008 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 E pins.
Port F is a 7-bit special function port that shares four of its pins with the
timer interface module (TIMA-6) and two of its pins with the timer
interface module (TIMB) on the MC68HC908AZ60A. Note that PTF4,
PTF5 and PTF6 are only available on 64-pin package options.
X = don’t care
Hi-Z = high impedance
1. Writing affects data register, but does not affect input.
DDRE
Bit
0
1
READ DDRE ($000C)
WRITE DDRE ($000C)
WRITE PTE ($0008)
READ PTE ($0008)
PTE
Bit
X
X
Input/Output Ports
Table 22-5. Port E Pin Functions
Figure 22-16. Port E I/O Circuit
RESET
Input, Hi-Z
I/O Pin
Output
Mode
DDREx
PTEx
Read/Write
DDRE[7:0]
DDRE[7:0]
Accesses
to DDRE
Table 22-5
PTE[7:0]
Read
Accesses to PTE
Pin
Input/Output Ports
summarizes
Technical Data
PTE[7:0]
PTE[7:0]
Write
Port F
PTEx
(1)
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