Table 1-1 Features
Feature Description
CPU General-register machine
• Eight 16-bit general registers
• Five 8-bit and two 16-bit control registers
High speed
• Maximum clock rate: 10MHz (oscillator frequency: 20MHz)
Expanded operating modes supporting external memory
• Minimum mode: up to 64K-byte address space
• Maximum mode: up to 1M-byte address space
Highly orthogonal instruction set
• Addressing modes and data size can be specified independently for
each instruction
1.5 Addressing modes
• Register-register operations
• Register-memory operations
Instruction set optimized for C language
• Special short formats for frequently-used instructions and addressing modes
Memory • 1K-Byte high-speed RAM on-chip
• 32K-Byte programmable or masked ROM on-chip
16-Bit free- Each channel provides:
running • 1 free-running counter (which can count external events)
timer (FRT) • 2 output-compare registers
(3 channels) • 1 input capture register
8-Bit timer • One 8-bit up-counter (which can count external events)
(1 channel) • 2 time constant registers
PWM timer • Generates pulses with any duty ratio from 0 to 100%
(3 channels) • Resolution: 1/250
Watchdog • An overflow generates a nonmaskable interrupt
timer (WDT) • Can also be used as an interval timer
(1 channel)
2
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