p87c770 ETC-unknow, p87c770 Datasheet - Page 4

• Manufacturer Part Number: p87c770
• Description: Microcontrollers Ntsc With On-screen Display Closed Caption
• Manufacturer: ETC-unknow

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(1) Alternative functions of Port 0 except PWM0 which is an alternative function of Port 1.
(2) Alternative functions of Port 1.
(3) Alternative functions of Port 3.
ALE/PROG
V PP /EA
RESET
PSEN
XO
XI
80C51 CORE
EXCLUDING
V DDA
ROM/RAM
interrupts
external
CPU
V SSA
2
V SSD
V DDC
V DDP
TWO 16-BIT
COUNTERS
(T0 AND T1)
TIMER/
PARALLEL
I/O PORT
P2
8
WATCHDOG
TIMER
8-BIT
(T3)
P0
Fig.1 Block diagram.
COMBINED
FUNCTION
PARALLEL
I/O PORTS
8
P1
5
64-KBYTES
P3
ROM
8
PWM0 to PWM8
1-KBYTE
RAM
9
DACS
7-BIT
(1)
FB
ON-SCREEN DISPLAY
R
STN
CC DATA SLICER
G
REFH
(OSD)
B
BLK
IREF
VSYNC
8-bit internal bus
CVBS
HSYNC
SDA
AFT0
INTERFACE
I
2
C-BUS
(3)
3
AFT1
(2)
ADCS
SCL
4-BIT
AFT2
(2)
(3)
MGR380
(2)