DS80C320-MCG Datasheet, PDF (120/175 Pages) Dallas Semiconductor – High-Speed Microcontroller User Guide

High-Speed Microcontroller User’s Guide
I/O PORT TIMING FOR MOV INSTRUCTION Figure 10-1
Last Cycle of
Previous
Instr. & MOV
prefetch
MOV Cycle 1
MOV Cycle 2
& First NOP
prefetch
First NOP
Cycle &
Second NOP
prefetch
C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4
CLK
ALE
PSEN
P1.0
AD0-AD7
A0-A7
D0-D7
A0-A7
D0-D7
A0-A7
D0-D7 A0-A7
D0-D7
PORT 2
MOV
Opcode
Address
MOV
Instruction
Opcode
MOV
Operand
Address
MOV
Instruction
Operand
First NOP
Instruction
Address
Second NOP
Instruction
First NOP ^Address
Instruction
Opcode
Second NOP
Instruction
Opcode
A8-A15
A8-A15
A8-A15
A8-A15
OPTIONAL FUNCTIONS
Every port pin on the High-Speed Microcontroller has an optional special function. These functions are
individually selectable. They can also be turned on and off dynamically to suit the application. The
optional function for each port pin is described briefly below. More information about each optional
function is available in the section dealing with that function or in the appropriate data sheet.
P0.0 AD0.0 Multiplexed Address/data bus
P2.0 A8 MSB Address bus
P0.1 AD0.1 Multiplexed Address/data bus
P2.1 A9 MSB Address bus
P0.2 AD0.2 Multiplexed Address/data bus
P2.2 A10 MSB Address bus
P0.3 AD0.3 Multiplexed Address/data bus
P2.3 A11 MSB Address bus
P0.4 AD0.4 Multiplexed Address/data bus
P2.4 A12 MSB Address bus
P0.5 AD0.5 Multiplexed Address/data bus
P2.5 A13 MSB Address bus
P0.6 AD0.6 Multiplexed Address/data bus
P2.6 A14 MSB Address bus
P0.7 AD0.7 Multiplexed Address/data bus
P2.7 A15 MSB Address bus
P1.0 T2 Timer 2 output pulse
P3.0 RXD0 Serial Receive UART0
P1.1 T2EX Timer 2 capture/reload input
P3.1 TXD0 Serial Transmit UART0
P1.2 RXD1 Serial Receive UART1
P3.2 INT0 External Interrupt 0 active low
P1.3 TXD1 Serial Transmit UART1
P3.3 INT1 External Interrupt 1 active low
P1.4 INT2 External Interrupt 2 rising edge active
P3.4 T0 Timer 0 input
P1.5 INT3 External Int. 3 falling edge active
P3.5 T1 Timer 1 input
P1.6 INT4 External Interrupt 4 rising edge active
P3.6 WR Write strobe
P1.7 INT5 External Int. 5 falling edge active
P3.7 RD Read strobe
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