RX140中文資料瑞薩數(shù)據(jù)手冊PDF規(guī)格書

Features

■ 32-bit RXv2 CPU core

? Max. operating frequency: 48 MHz

Capable of 204 Coremark in operation at 48 MHz

? Enhanced DSP instructions: 32-bit multiply-accumulate instructions,

and 16-bit multiply-subtract instructions are supported.

? On-chip FPU: 32-bit single-precision floating point compliant with

IEEE-754

? On-chip divider that operated at the fastest of two clock cycles

? Fast interrupt

? CISC Harvard architecture with 5-stage pipeline

? Variable-length instructions, ultra-compact code

? On-chip debugging circuit

■ Low power design and architecture

? Operation from a single 1.8-V to 5.5-V supply

? Four low power consumption modes

? Low power timer (LPT) that operates during the software standby state

? Supply current

High-speed operating mode: 58 μA/MHz

Supply current in software standby mode: 0.25 μA (typ.) (Ta = 25°C)

? Recovery time from software standby mode: 6.2 μs (typ.) (Clock

Source: HOCO 32 MHz, Ta = 25°C)

■ On-chip flash memory for code

? 64 K/128 K/256 Kbytes size capacities

? User code is programmable by on-board programming.

? Programmable at 1.8 V

? For instructions and operands

■ On-chip data flash memory

? 4K/8 Kbytes (1,000,000 program/erase cycles (typ.))

? BGO (Background Operation)

■ On-chip SRAM, no wait states

? 16 K/32 K/64 Kbytes size capacities

■ DTC

? Five transfer modes

■ ELC

? Module operation can be initiated by event signals without using

interrupts.

? Linked operation between modules is possible while the CPU is sleeping.

■ Reset and supply management

? Seven types of reset, including the power-on reset (POR)

? Low voltage detection (LVD) with voltage settings

■ Clock functions

? External clock input frequency: Up to 20 MHz

? Main clock oscillator frequency: 1 to 20 MHz

? Sub clock oscillator frequency: 32.768 kHz

? PLL circuit input: 4 MHz to 12 MHz

? Low-speed on-chip oscillator: 4 MHz

? High-speed on-chip oscillator: 24/32/48 MHz ± 1

? IWDT-dedicated on-chip oscillator: 15 kHz

? Generate a 32.768 kHz clock for the real-time clock

? On-chip clock frequency accuracy measurement circuit (CAC)

■ Realtime clock

? Adjustment functions (30 seconds, leap year, and error)

? Calendar count mode or binary count mode selectable

■ Independent watchdog timer

? 15-kHz on-chip oscillator produces a dedicated clock signal to drive

IWDT operation.

■ Useful functions for IEC60730 compliance

? Self-diagnostic and disconnection-detection assistance functions for

the A/D converter, clock frequency accuracy measurement circuit,

independent watchdog timer, RAM test assistance functions using the

DOC, etc.