UPD789304 Datasheet, PDF (5/64 Pages) NEC – 8-BIT SINGLE-CHIP MICROCONTROLLER

µPD789304, 789306, 789314, 789316
OVERVIEW OF FUNCTIONS
Item
µPD789304
µPD789306
µPD789314
µPD789316
Internal
memory
ROM
High-speed RAM
8 KB
512 bytes
16 KB
8 KB
16 KB
LCD display RAM 24 bytes
Main system clock
(oscillation frequency)
Ceramic/crystal oscillation (1.0 to 5.0 MHz) RC oscillation (2.0 to 4.0 MHz)
Subsystem clock
(oscillation frequency)
Crystal oscillation (32.768 kHz)
Minimum instruction execution time
0.4 µs/1.6 µs
(@ 5.0 MHz operation with main system
clock)
0.5 µs/2.0 µs
(@ 4.0 MHz operation with main system
clock)
122 µs (@ 32.768 kHz operation with subsystem clock)
General-purpose registers
8 bits × 8 registers
Instruction set
• 16-bit operation
• Bit manipulation (set, reset, test)
I/O ports
Total:
23
• CMOS I/O:
19
• N-ch open drain:
4
Timers
• 16-bit timer:
1 channel
• 8-bit timer/event counter: 2 channels
• Watch timer:
1 channel
• Watchdog timer:
1 channel
Serial interface
• Switchable between 3-wire serial I/O mode and UART mode: 1 channel
• 3-wire serial I/O mode:
1 channel
LCD controller/driver
• Segment signal outputs: 24 (Max.)
• Common signal outputs: 4 (Max.)
Vectored interrupt Maskable
sources
Non-maskable
Internal: 9, External: 5
Internal: 1
Power supply voltage
VDD = 1.8 to 5.5 V
Operating ambient temperature
TA = –40 to +85°C
Package
• 64-pin plastic QFP (14 × 14)
• 64-pin plastic TQFP (12 × 12)
Data Sheet U14384EJ1V0DS
5