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Details, datasheet, quote on part number:UPD784031A
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD784031(A)
16/8-BIT SINGLE-CHIP MICROCONTROLLER
The µPD784031(A) is a product of the µPD784038 sub-series in the 78K/IV series. A stricter quality assurance program applies to the µPD784031(A) than the µPD784031 (standard product). In terms of the NEC quality, the
µPD784031(A) is classified as the special grade.
The µPD784031(A) contains various peripheral hardware such as RAM, I/O ports, 8-bit resolution A/D and D/A converters, timers, serial interface, and interrupt functions, as well as a high-speed, high-performance CPU. The µPD784031(A) is a ROM-less product of the µPD784035(A) and µPD784036(A). For specific functions and other detailed information, consult the following user's manual. This manual is required reading for design work. µPD784038, 784038Y Sub-Series User's Manual, Hardware : U11316E 78K/IV Series User's Manual, Instruction : U10905E
FEATURES
· Higher reliability than the µPD784031 (Refer to Quality Grade on NEC Semiconductor Devices (Document number C11531E).) · Minimum instruction execution time: 125 ns (at 32 MHz) · Number of I/O ports: 46 · Serial interface: 3 channels UART/IOE (3-wire serial I/O): 2 channels CSI (3-wire serial I/O, 2-wire serial I/O): 1 channel · PWM outputs: 2 · Timer/counters 16-bit timer/counter × 3 units 16-bit timer × 1 unit · Standby function HALT/STOP/IDLE mode · Clock frequency division function · Watchdog timer: 1 channel · A/D converter: 8-bit resolution × 8 channels · D/A converter: 8-bit resolution × 2 channels · Power supply voltage: VDD = 2.7 to 5.5 V
APPLICATIONS
Controllers for automobile electronic control systems, gas detector circuit-breakers, various types of safety equipment, etc.
T h e information in this document is subject to change without notice.
Document No. U13009EJ1V0DS00 (1st edition) Date Published December 1997 J Printed in Japan
1997
µPD784031(A)
ORDERING INFORMATION
Part number Package 80-pin plastic QFP (14 × 14 mm) Internal ROM (bytes) None Internal RAM (bytes) 2 048
µP D 7 8 4 0 3 1 G C ( A ) - 3 B 9
QUALITY GRADE
Part number Package 80-pin plastic QFP (14 × 14 mm) Quality grade Special
µP D 7 8 4 0 3 1 G C ( A ) - 3 B 9
P l e a s e refer to "Quality Grades on NEC Semiconductor Devices" (Document No. C11531E) published by N E C Corporation to know the specification of quality grade on the devices and its recommended applications.
78K/IV SERIES PRODUCT DEVELOPMENT DIAGRAM
: Under mass production : Under development
I2C bus supported
Multimaster I2C bus supported
µPD784038Y
Standard models
µPD784225Y µPD784225
80 pins, added ROM correction Multimaster I2C bus supported
µPD784038
Enhanced internal memory capacity, pin compatible with the µPD784026 Multimaster I2C bus supported
µPD784026
Enhanced A/D, 16-bit timer, and power management
µPD784216Y µPD784216
100 pins, enhanced I/O and internal memory capacity
µPD784218Y µPD784218
Enhanced internal memory capacity, added ROM correction
µPD784054 µPD784046
ASSP models Equipped with 10-bit A/D
µ PD784955
For DC inverter control
µ PD784908
Equipped with IEBusTM controller
µPD784943
For CD-ROM
Multimaster I2C bus supported
µ PD784928Y µ PD784928
Enhanced function of the µPD784915
µPD784915
For software servo control, equipped with analog circuit for VCR, enhanced timer
2
µPD784031(A)
FUNCTIONS
Item Number of basic instructions (mnemonics) General-purpose register Minimum instruction execution time Internal memory Memory space I/O ports Total Input Input/output Output Additional function pinsNote ROM RAM 113 8 bits × 16 registers × 8 banks, or 16 bits × 8 registers × 8 banks (memory mapping) 125 ns/250 ns/500 ns/1 000 ns (at 32 MHz) None 2 048 bytes Program and data: 1M byte 46 8 34 4 Function
Pins with pull- 32 up resistor LED direct drive outputs Transistor direct drive 8 8 4 bits × 2, or 8 bits × 1 Timer/counter 0: (16 bits) Timer register × 1 Capture register × 1 Compare register × 2 Timer register × 1 Capture register × 1 Capture/compare register × 1 Compare register × 1 Timer register × 1 Capture register × 1 Capture/compare register × 1 Compare register × 1 Timer register × 1 Compare register × 1 Pulse output capability · Toggle output · PWM/PPG output · One-shot pulse output Pulse output capability · Real-time output (4 bits × 2)
Real-time output ports Timer/counter
Timer/counter 1: (8/16 bits)
Timer/counter 2: (8/16 bits)
Pulse output capability · Toggle output · PWM/PPG output
Timer 3 (8/16 bits) PWM outputs Serial interface A/D converter D/A converter Watchdog timer Standby Interrupt Software source Nonmaskable Maskable
:
12-bit resolution × 2 channels UART/IOE (3-wire serial I/O) : 2 channels (incorporating baud rate generator) CSI (3-wire serial I/O, 2-wire serial I/O): 1 channel 8-bit resolution × 8 channels 8-bit resolution × 2 channels 1 channel HALT/STOP/IDLE mode Hardware source 23 (16 internal, 7 external (sampling clock variable input: 1)) BRK instruction, BRKCS instruction, operand error 1 internal, 1 external 15 internal, 6 external · 4-level programmable priority · 3 operation statuses: vectored interrupt, macro service, context switching
Supply voltage Package
VDD = 2.7 to 5.5 V 80-pin plastic QFP (14 × 14 mm)
Note Additional function pins are included in the I/O pins.
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