CXP853P40A
CMOS 8-bit Single-chip Microcomputer
Description
The CXP853P40A are a highly integrated micro-
computers composed of a 8-bit CPU, PROM, RAM,
and I/O ports. These chips feature many other high-
performance circuits in a single-chip CMOS design,
including an A/D converter, serial interface,
timer/counter, time-base timer, vector interrupt, on-
screen display function, I
2
C bus interface, PWM
generator, remote control receiver, HSYNC counter,
power supply frequency counter, and watchdog timer.
Also, this IC provides power-on reset and sleep
functions. The designers have ensured low power
consumption for these powerful microcomputers.
The CXP853P40A is the one-chip PROM version
of the CXP85340A with on-chip mask ROM,
providing the function of being able to write directly
into the program. Furthermore, because of the OSD
character ROM can also be written directly into, it is
suitable for evaluation use during system
development and for small quantity production.
64 pin SDIP (PIastic)
64 pin QFP (PIastic)
in an I
2
C system, provided that the system conforms
to the I
2
C Standard Specifications as defined by
Philips.
Features
•
A wide instruction set (213 instructions) which covers various of data
— 16-bit arithmetic instruction/multiplication and division instructions/boolean bit operation instruction
•
Minimum instruction cycle
1µs/4MHz (4MHz verison)
0.5µs/8MHz (8MHz verison)
•
Incorporated PROM capacity
40K bytes (For program)
6.75K bytes (For OSD)
•
Incorporated RAM capacity
576 bytes
•
Peripheral funcitons
— On-screen display function
12
×
18 dots, 256 types, 15 colors, 12 lines of 21 characters
Black frame output half blanking, shadow, background color on full
screen/half blanking
Double scanning mode supported, jitter elimination circuit
— I
2
C bus interface
— PWM output
14 bits, 1 channel
8 bits, 8 channels
— Remote control receiver circuit 8-bit pulse measuring counter, 6-stage FIFO
— A/D converter
8-bit, 4 channels, successive approximation system
(conversion time of 40µs/4MHz, 8MHz)
— HSYNC counter
— Power supply frequency counter
— Watchdog timer
— Serial I/O
8-bit synchronized
— Timer
8-bit timer, 8-bit timer/counter, 19-bit time-base timer
•
Interruption
14 factors, 14 vectors, multiple interrupt possible
•
Standby mode
Sleep
•
Package
64-pin plastic SDIP/QFP
Purchase of Sony's I
2
C components conveys a license under the Philips I
2
C Patent Rights to use these components
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E93Z19A7Z-PS
CXP853P40A
Pin Description
Symbol
PA0 to PA5
PA6/VSYNC
PA7/HSYNC
PB0 to PB7
I/O
I/O/Input
I/O/Input
I/O
I/O
Description
(Port A)
Single bit selectable 8-bit I/O port.
(8 pins)
CRT display vertical synchronization signal input pin.
CRT display horizontal synchronization signal input pin.
(Port B)
Single bit selectable 8-bit I/O port.
(8 pins)
(Port C)
Single bit selectable 8-bit I/O port.
(8 pins)
Input pin for external interrupt request.
Active on falling edge.
Serial clock I/O pin.
(Port D)
Single bit selectable Serial data output pin.
8-bit I/Oport.
Serial data input pin.
12mA sink current
drive possible.
HSYNC counter input pin.
(8 pins)
Power supply frequency counter input pin.
Remote control receiver circuit input pin.
External event timer/counter input pin.
Input pin for external interrupt request.
Active on falling edge.
(2 pins)
Analog input pin for A/D converter.
(4 pins)
14-bit PWM output pin.
(CMOS output)
Square wave output for timer 1.
(50% duty cycle)
(Port F)
8-bit output port
with large current
(12mA) N-ch open
drain output.
Lower 4 bits middle
voltage tolerance
(12V), upper 4 bits
5V suppression.
(8 pins)
8-bit PWM output pin.
(8 pins)
PC0 to PC7
I/O
PD0/INT2
PD1/SCK
PD2/SO
PD3/SI
PD4/HSI
PD5/ACI
PD6/RMC
PD7/EC
PE0/INT0
PE1/INT1
PE2/AN0
to
PE5/AN3
PE6/PWM
PE7/TO
PF0/PWM0
to
PF3/PWM3
PF4/PWM4/
SCL0
PF5/PWM5/
SCL1
PF6/PWM6/
SDA0
PF7/PWM7/
SDA1
R, G, B, I, YS, YM
I/O/Input
I/O/I/O
I/O/Output
I/O/Input
I/O/Input
I/O/Input
I/O/Input
I/O/Input
Input/Input
(Port E)
8-bit port, lower
6 bits for input,
upper 2 bits for
output.
(8 pins)
Input/Input
Output/Output
Output/Output
Output/Output
Output/Output/
I/O
I
2
C bus interface transfer clock I/O pin.
Output/Output/
I/O
Output
I
2
C bus interface transfer data I/O pin.
CRT display 6-bit output pin.
–5–
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