Features
■ 32-bit RXv3 CPU core
 Maximum operating frequency: 120 MHz
Capable of 709 CoreMark in operation at 120 MHz
 A collective register bank save function is available.
 Supports the memory protection unit (MPU)
 JTAG and FINE (one-line) debugging interfaces
■ Low-power design and architecture
 Operation from a single 2.7- to 5.5-V supply
 Deep software standby mode with the RTC continuing to run
 Four low-power modes
■ On-chip code flash memory
 Supports versions with up to 1 Mbyte of ROM
 No waiting for access in 120-MHz operation
 User code is programmable by on-board or off-board programming.
 Programming/erasing as background operations (BGOs)
■ On-chip data flash memory
 32 Kbytes, reprogrammable up to 100,000 times
 Programming/erasing as background operations (BGOs)
■ On-chip SRAM
 128 Kbytes of SRAM (no wait states)
■ External address space
 Buses for full-speed data transfer (maximum operating frequency of
40 MHz)
 Four CS areas
 8- or 16-bit bus space is selectable per area
■ Data transfer
 DMACAa: 8 channels
 DTCb: 1 channel
■ ELC
 Module operation can be initiated by event signals without using
interrupts
 Linked operation between modules is possible when the CPU is in
sleep mode
■ Reset and supply management
 Power-on reset (POR)
 Low voltage detection (LVD)
■ Clock functions
 The main clock oscillator is connectable to an 8- to 24-MHz external
crystal resonator and usable as the PLL reference clock.
 A sub-clock oscillator connectable to a 32.768-kHz crystal resonator
 Internal 240-kHz LOCO and HOCO selectable from 16, 18, and 20
MHz
 120-kHz clock for the IWDTa
■ Real-time clock
 Adjustment functions (30 seconds, leap year, and error)
 Real-time clock counting and binary counting modes are selectable
 Time capture in response to an event-signal input
■ Independent watchdog timer
 120-kHz IWDT-dedicated on-chip oscillator clock operation
■ Useful functions for IEC60730 compliance
 Oscillation-stoppage detection, functions for self-diagnosis and
detection of disconnection for the A/D converter, clock frequency
accuracy measurement circuit, independent watchdog timer, RAM
test-assisting function by DOC, and CRCA, etc.
 Register write protection function that protects important registers
against overwriting