MC68HC08AZ60ACFU MOTOROLA [Motorola, Inc], MC68HC08AZ60ACFU Datasheet - Page 329

• Manufacturer Part Number: MC68HC08AZ60ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

20.7 Port E
20.7.1 Port E Data Register (PTE)
MC68HC08AZ60A — Rev 0.0
MOTOROLA
$0008
PTE
Function:
Alternate
Reset:
Read:
Write:
Port E is an 8-bit special function port that shares two of its pins with the
timer interface module (TIMA), two of its pins with the serial
communications interface module (SCI) and four of its pins with the
serial peripheral interface module (SPI).
The port E data register contains a data latch for each of the eight port
E pins.
PTE[7:0] — Port E Data Bits
SPSCK — SPI Serial Clock
MOSI — Master Out/Slave In
PTE[7:0] are read/write, software programmable bits. Data direction
of each port E pin is under the control of the corresponding bit in data
direction register E.
The PTE7/SPSCK pin is the serial clock input of a SPI slave module
and serial clock output of a SPI master modules. When the SPE bit is
clear, the PTE7/SPSCK pin is available for general-purpose I/O.
The PTE6/MOSI pin is the master out/slave in terminal of the SPI
module. When the SPE bit is clear, the PTE6/MOSI pin is available for
general-purpose I/O. See
SPSCK
PTE7
Bit 7
Figure 20-13. Port E Data Register (PTE)
MOSI
PTE6
6
I/O Ports
PTE5
MISO
5
SPI Control Register
Unaffected by reset
PTE4
SS
4
TACH1
PTE3
3
TACH0
PTE2
2
(SPCR).
Advance Information
PTE1
RxD
1
I/O Ports
PTE0
TxD
Bit 0
Port E
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