參數(shù)資料
型號(hào): L8708H
廠商: ZiLOG, Inc.
英文描述: IR/Low-Voltage Microcontroller
中文描述: 紅外/低電壓微控制器
文件頁(yè)數(shù): 20/66頁(yè)
文件大?。?/td> 599K
代理商: L8708H
Z86L88/81/86/87/89/73
IR/Low-Voltage Microcontroller
20
P R E L I M I N A R Y
DS96LV00800
PIN FUNCTIONS
(Continued)
Port 1
(P17-P10). Port 1 is a multiplexed Address (A7-A0)
and Data (D7-D0), CMOS compatible port. Port 1 is dedi-
cated to the Zilog ZBus
-compatible memory interface.
The operations of Port 1 are supported by the Address
Strobe (/AS) and Data Strobe (/DS) lines, and by the
Read/Write (R//W) and Data Memory (/DM) control lines.
Data memory read/write operations are done through this
port (Figure 14). If more than 256 external locations are re-
quired, Port 0 outputs the additional lines.
Port 1 can be placed in the high-impedance state along
with Port 0, /AS, /DS, and R//W, allowing the Z86LXX to
share common resources in multiprocessor and DMA ap-
plications. Port1 can also be configured for standard port
output mode..
Figure 14. Port 1 Configuration
Port 1
(I/O or AD7 - AD0)
Optional
Handshake Controls
/DAV1 and RDY1
(P33 and P34)
Z86LXX
MCU
8
OEN
Out
In
PAD
Auto Latch
R
500 K
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