參數(shù)資料
型號(hào): SAA5355
廠商: NXP SEMICONDUCTORS
元件分類(lèi): 顯示控制器
英文描述: Single-chip colour CRT controller FTFROM
中文描述: 40 X 80 CHARACTERS CRT CHAR DSPL CTLR, PDIP40
文件頁(yè)數(shù): 27/31頁(yè)
文件大?。?/td> 335K
代理商: SAA5355
March 1986
27
Philips Semiconductors
Product specification
Single-chip colour CRT controller
(FTFROM)
SAA5355
Disconnected systems
For many applications it may be desirable to disconnect FTFROM and the display memory from the microprocessor and
its ROM, RAM and other peripherals by using isolating buffers as shown in Fig.23. The two parts of the system then
operate independently and communicate only when the microprocessor accesses FTFROM’s register map or the display
memory.
(1) 74LS373 octal transparent latch (3-state)
(2) 74LS244 octal buffer (3-state)
(3) 74LS245 octal bus transceiver (3-state)
Fig.23 Disconnected 8-bit system.
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