MC68HC708MP16 Datasheet, PDF (328/398 Pages) Freescale Semiconductor, Inc – Microcontrollers

Input/Output (I/O) Ports
15.7 Port E
Port E is an 8-bit special function port that shares three of its pins with
the timer A interface module (TIMA) and five of its pins with the timer B
interface module (TIMB).
15.7.1 Port E Data Register
The port E data register (PTE) contains a data latch for each of the eight
port E pins.
Address: $0003
Read:
Write:
Bit 7
PTE7
6
PTE6
5
PTE5
4
PTE4
3
PTE3
2
PTE2
1
PTE1
Bit 0
PTE0
Reset:
Unaffected by reset
Figure 15-13. Port E Data Register (PTE)
PTE[7:0] — Port E Data Bits
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.
NOTE:
Data direction register E (DDRE) does not affect the data direction of
port E pins that are being used by the TIMA or TIMB. However, the
DDRE bits always determine whether reading port E returns the states
of the latches or the states of the pins.
Technical Data
328
Input/Output (I/O) Ports
MC68HC708MP16 — Rev. 3.1
Freescale Semiconductor