Vcc AD0 - AD7 D0 - D7 -INTR RST 6.5 74LS373 ALE Address Decoding Logic A0 - A3 A1" />
參數(shù)資料
型號(hào): XR88C681P/40-F
廠商: Exar Corporation
文件頁(yè)數(shù): 30/101頁(yè)
文件大?。?/td> 0K
描述: IC UART CMOS DUAL 40PDIP
標(biāo)準(zhǔn)包裝: 9
特點(diǎn): *
通道數(shù): 2,DUART
FIFO's: 1 字節(jié),3 字節(jié)
電源電壓: 4.75 V ~ 5.25 V
帶并行端口:
帶CMOS:
安裝類型: 通孔
封裝/外殼: 40-DIP(0.600",15.24mm)
供應(yīng)商設(shè)備封裝: 40-PDIP
包裝: 管件
其它名稱: 1016-1640
XR88C681P/40-F-ND
XR88C681
34
Rev. 2.11
Vcc
AD0 - AD7
D0 - D7
-INTR
RST 6.5
74LS373
ALE
Address Decoding
Logic
A0 - A3
A15 - A8
-CS
8085 CPU
XR88C681
A7 - A4
C
-IOR
-MEMR
-IOW
-MEMW
-IO/M
-RD
-WR
-RD
D
Q
Figure 10. The XR88C681/8085 CPU Interface for Direct Interrupt Processing
(Interrupt Service Routine is located at 003416 in System Memory)
Figure 11 presents a schematic where the DUART will request a “External-Vectored” Interrupt to the 8085 CPU. In this
case, the Interrupt Service Routine for the DUART must begin at 002016 in system memory.
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