UPD784044 Datasheet, PDF (4/90 Pages) NEC – 16-BIT SINGLE-CHIP MICROCONTROLLER

µPD784044(A), 784046(A)
FUNCTION LIST
Item
Product
µPD784044(A)
µPD784046(A)
Number of basic
113
instructions (mnemonics)
General-purpose register 8 bits × 16 registers × 8 banks, or 16 bits × 8 registers × 8 banks (memory mapping)
Minimum instruction
execution time
• 160 ns (with internal 12.5-MHz clock): µPD784044(A), 784046(A)
• 200 ns (with internal 10-MHz clock) : µPD784044(A1), (A2), 784046(A1), (A2)
Internal
ROM
32K bytes
64 K bytes
memory
RAM
1024 bytes
2048 bytes
Memory space
1M bytes with program/data combined
I/O port
Total
65 pins
Input
17 pins
I/O
48 pins
Pins with Pins with 29 pins
ancillary
pull-up
functions^Note resistors
Real-time output port
4 bits × 1
Timer/counter
Timer 0
(16 bits)
: Timer register × 1,
capture/compare register × 4
Pulse output possible
• Toggle output
• Set/reset output
Timer 1
(16 bits)
: Timer register × 1,
compare register × 2
Pulse output possible
• Toggle output
• Set/reset output
Timer/counter 2 : Timer register × 1,
(16 bits)
compare register × 2
Pulse output possible
• Toggle output
• PWM/PPG output
Timer/counter 3 : Timer register × 1,
(16 bits)
compare register × 2
Pulse output possible
• Toggle output
• PWM/PPG output
Timer 4
(16 bits)
: Timer register × 1,
compare register × 2
Pulse output possible
• Read-time output (4 bits × 1)
A/D converter
10-bit resolution × 16 channels
Serial interface
UART/IOE (3-wire serial I/O): 2 channels (with baud rate generator)
Watchdog timer
1 channel
Interrupt Hardware source 27 (internal: 23, external: 8 (internal/external: 4))
Software source BRK instruction, BRKCS instruction, operand error
Non-maskable Internal: 1, external: 1
Maskable
Internal: 22, external: 7 (internal/external: 4)
• 4 levels of programmable priorities
• 3 processing formats: vectored interrupt/macro service/context switching
Bus sizing
8-bit/16-bit external data bus width selectable
Standby
HALT/STOP/IDLE mode
Supply voltage
VDD = 4.5 to 5.5 V
Package
80-pin plastic QFP (14 × 14 mm)
Note The pins with ancillary functions are included in the I/O pins.
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