CHAPTER 1 INTRODUCTION
User’s Manual U12688EJ4V0UM00
38
(10) Ports
As shown below, the following ports have general port functions and control pin functions.
Port
Port Function
Control Function
Port 0
8-bit I/O
Real-time pulse unit input/output, external interrupt input, DMA controller input
Port 1
8-bit I/O
Real-time pulse unit input/output, external interrupt input, DMA controller output
Port 2
1-bit input,
7-bit I/O
NMI input, serial interface input/output
Port 3
8-bit I/O
Real-time pulse unit input/output, external interrupt input, serial interface input/output
Port 4
8-bit I/O
External data bus
Port 5
8-bit I/O
External data bus
Port 6
8-bit I/O
External address bus
Port 7
8-bit input
A/D converter input
Port 8
8-bit I/O
External bus interface control signal output
Port 9
8-bit I/O
External bus interface control signal input/output
Port 10
8-bit I/O
Real-time pulse unit input/output, external interrupt input, DMA controller output
Port 11
8-bit I/O
Real-time pulse unit input/output, external interrupt input, serial interface input/output
Port 12
8-bit I/O
Real-time pulse unit input/output, external interrupt input, A/D converter external trigger
input
Port A
8-bit I/O
External address bus
Port B
8-bit I/O
External address bus
Port X
3-bit I/O
Refresh request signal output, wait insertion signal input, internal system clock output
Содержание V850E/MS1 UPD703100
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