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EM78P257AP датащи(PDF) 53 Page - ELAN Microelectronics Corp

номер детали EM78P257AP
подробное описание детали  8-BIT MICROCONTROLLER
PDF  91 Pages
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производитель  EMC [ELAN Microelectronics Corp]
домашняя страница  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P257AP датащи(HTML) 53 Page - ELAN Microelectronics Corp

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EM78P257
OTP ROM
This specification is subject to change without prior notice.
07.27.2004 (V1.4)
53
4.11 MOUSE APPLICATION MODE
1. Overview & Features
Overview:
Fig.25 shows how EM78P257A/B communicates with PS/2 connector of PC.
Features:
• RC oscillation.
• Six photo-couples input.
4.5R
X2(TCC2)
VCC
R
4.5R
X1(TCC1)
VCC
+
R
TCCA(UP/DOWN Counter)
After MCU process
send data to PC
MOUSEN
+
15K
15K
MOUSEN
MOUSEN
C1
C2
-
-
4.5R
Y2(TCC4)
VCC
R
4.5R
Y1(TCC3)
VCC
+
R
TCCB(UP/DOWN Counter)
After MCU process
send data to PC
MOUSEN
+
15K
15K
MOUSEN
MOUSEN
C3
C4
-
-



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