R5F2123 Datasheet PDF

●The R5F21238DFP#U0 is a 16-bit Single-chip Microcomputer built using the high-performance silicon gate CMOS process using the R8C CPU. This MCU operates using sophisticated instructions featuring a high level of instruction efficiency. With 1MB of address space, it is capable of executing instructions at high speed. This MCU is equipped with one CAN module and suited to in-vehicle or FA networking. Furthermore, the data flash (1kB x 2 blocks) is embedded in the R8C/23 Group.

● 89 Fundamental instructions

● Minimum instruction execution time - 50ns (f(XIN) = 20MHz, VCC = 3 to 5.5V)

● Minimum instruction execution time - 100ns (f(XIN) = 10MHz, VCC = 2.7 to 5.5V)

● Single-chip operating mode

● Clock synchronous serial I/O

● UART interface

● I²C Bus interface

● Clock synchronous serial I/O with chip select (SSU)

● 1-channel Hardware LIN

● 12-channel 10-bit ADC

● 1-channel CAN module with 2.0B specification - 16 slots

● Watchdog timer

● Interrupts - Internal 14 sources, external 6 sources, software 4 sources, priority levels 7 levels

● 2 x Clock generation circuits

● On-chip voltage detection circuit

● On-chip power-on reset circuit

● XIN clock oscillation stop detection function