Table of Contents
Advertisement
5.14
Port E
5.14.1
Overview
Port E is an 8-bit I/O port. Port E pins also function as data bus input/output pins. The pin
functions change according to the operating mode and the bus mode (8-bit or 16-bit).
Port E has a built-in MOS input pull-up function that can be controlled by software.
Figure 5.13 shows the port E pin configuration.
Port E
Port E pins
PE7 / D7
PE6 / D6
PE5 / D5
PE4 / D4
PE3 / D3
PE2 / D2
PE1 / D1
PE0 / D0
Figure 5.13 Port E Pin Functions
Pin functions in modes 1 and 5
D7 (I/O)
D6 (I/O)
D5 (I/O)
D4 (I/O)
D3 (I/O)
D2 (I/O)
D1 (I/O)
D0 (I/O)
Pin functions in modes 2, 4, 6, and 7
PE7 (I/O) / D7 (I/O)
PE6 (I/O) / D6 (I/O)
PE5 (I/O) / D5 (I/O)
PE4 (I/O) / D4 (I/O)
PE3 (I/O) / D3 (I/O)
PE2 (I/O) / D2 (I/O)
PE1 (I/O) / D1 (I/O)
PE0 (I/O) / D0 (I/O)
269
Advertisement
Table of Contents
