參數(shù)資料
型號(hào)： W78C438C40PL
廠商： WINBOND ELECTRONICS CORP
元件分類： 微控制器/微處理器
英文描述： 8-BIT MICROCONTROLLER
中文描述： 8-BIT, 40 MHz, MICROCONTROLLER, PQCC84
封裝： ROHS COMPLIANT, PLASTIC, LCC-84
文件頁(yè)數(shù)： 12/22頁(yè)
文件大?。?/td> 266K
代理商： W78C438C40PL
W78C438C
- 12 -
5.6 Programming Difference
The W78C438C is programmed in the same way as the W78C32, except that the external data RAM
is accessed by a "MOVX @Ri" instruction. To support address paging, there is an additional 8-bit SFR
"HB" (high byte), which is a nonstandard register, at address 0A1H. During execution of the "MOVX
@Ri" instruction, the contents of HB are output to AP6. The page address is modified by loading the
HB register with a new value before execution of the "MOVX @Ri" instruction. To read/write the HB
register, one can use the "MOV direct" instruction or "read-modify-write" instructions. The HB register
does not support bit-addressable instructions.
[Example].
MOV
R1, #0H
; R1 = 0.
MOV
0A1H, #0FFH ; HB contents FFH.
MOVX
A, @R1
; Read the contents of external RAM location FF00H into
; Accumulator.
MOV
0A1H, #12H
; HB contents 12H.
MOVX
@R1, A
; Copies the contents of Accumulator into external RAM
; location 1200H.
相關(guān)PDF資料
PDF描述
W78C458 8-BIT EMULATION MICROCONTROLLER
W78958B 8-BIT EMULATION MICROCONTROLLER
W78958BF 8-BIT EMULATION MICROCONTROLLER
W78C154 8-BIT EMULATION MICROCONTROLLER
W78C31 8-BIT EMULATION MICROCONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W78C438CF-24 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W78C438CF-40 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W78C438CP-24 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W78C438CP-40 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W78C458 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT EMULATION MICROCONTROLLER
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*