UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 43

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

1.1 FEATURES
78K/IV series
Pin-compatible with PD78234 subseries
High-speed instruction execution
• Minimum instruction execution time (25 MHz operation): 160 ns/320 ns/640 ns/1280 ns
Instruction set suitable for control applications
Data memory extension function (1 M-byte memory space: 2 bank specification pointers)
Interrupt controller (4-level priority system)
• Vectored interrupt service/macro service/context switching
Standby functions: HALT/STOP/IDLE modes
Internal memory: • ROM
I/O pins
• Software programmable pull-up : 54 inputs ( PD784025, 784026, 78P4026)
• Direct LED drive capability
• Direct transistor drive capability : 8 outputs
Serial interface
• UART/IOE (3-wire serial I/O): 2 channels (with internal baud rate generator)
• CSI (3-wire serial I/O, serial bus interface): 1 channel
Real-time output ports (combination with timer/counter allows independent control of 2-system stepping motors)
A/D converter (8-bit resolution
D/A converter (8-bit resolution
PWM outputs (12-bit resolution
High-performance timer/counter
• Timer/counter (16 bits)
• Timer (16 bits)
Watchdog timer: 1 channel
Clock output function: f
: 64 ( PD784025, 784026, 78P4026)
46 ( PD784020, 784021)
• RAM
1 unit
Mask ROM : 64 K bytes ( PD784026)
PROM
CLK
, f
3 units
CLK
/2, f
8 channels)
2 channels)
: 64 K bytes ( PD78P4026)
: 2048 bytes ( PD784021, 784025, 784026, 78P4026)
2 channels)
: 24 outputs ( PD784025, 784026, 78P4026)
48 K bytes ( PD784025)
Not incorporated ( PD784020, 784021)
512 bytes ( PD784020)
CLK
34 inputs ( PD784020, 784021)
8 outputs ( PD784020, 784021)
/4, f
CLK
CHAPTER 1 GENERAL
/8, f
CLK
/16 can be selected (except for PD784020, 784021)
3