RA2L2 datasheet(5/108 Pages) RENESAS

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Table 1.8

Analog

Feature

Functional description

12-bit A/D Converter (ADC12)

A 12-bit successive approximation A/D converter is provided. Up to 17 analog input channels

are selectable. Temperature sensor output and internal reference voltage are selectable for

conversion.

Temperature Sensor (TSN)

The on-chip Temperature Sensor (TSN) determines and monitors the die temperature for

reliable operation of the device. The sensor outputs a voltage directly proportional to the die

temperature, and the relationship between the die temperature and the output voltage is fairly

linear. The output voltage is provided to the ADC12 for conversion and can be further used by

the end application.

Table 1.9

Data processing

Feature

Functional description

Cyclic Redundancy Check (CRC)

calculator

The Cyclic Redundancy Check (CRC) generates CRC codes to detect errors in the data. The

bit order of CRC calculation results can be switched for LSB-first or MSB-first communication.

Additionally, various CRC-generation polynomials are available. The snoop function allows the

access to specific addresses to be monitored. This function is useful in applications that require

CRC code to be generated automatically in certain events, such as monitoring writes to the serial

transmit buffer and reads from the serial receive buffer.

Data Operation Circuit (DOC)

The Data Operation Circuit (DOC) compares, adds, and subtracts 16-bit data. When a selected

condition applies, 16-bit data is compared and an interrupt can be generated.

Table 1.10

I/O ports

Feature

Functional description

I/O ports

● I/O ports for the 64-pin LQFP

– I/O pins: 51

– Input pins: 3

– Pull-up resistors: 51

– N-ch open-drain outputs: 38

– 5-V tolerance: 7

● I/O ports for the 48-pin LQFP/HWQFN

– I/O pins: 35

– Input pins: 3

– Pull-up resistors: 35

– N-ch open-drain outputs: 24

– 5-V tolerance: 7

● I/O ports for the 32-pin LQFP/HWQFN

– I/O pins: 21

– Input pins: 3

– Pull-up resistors: 21

– N-ch open-drain outputs: 13

– 5-V tolerance: 5

RA2L2 Datasheet

1. Overview

R01DS0445EJ0120 Rev.1.20

Jun 9, 2026

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