APM32E103CEU6-R datasheet(33/79 Pages) GEEHY

33 / 79 page

www.g eeh y.co m

Pag e 32

Name

Counter

resolution

Counter

type

Prescaler

coefficient

Functional Description

Driven by the master clock, it has early interrupt

warning function;

Timers in debug mode can be frozen.

4.13.

RTC

1 RTC is built in, and there are LSECLK signal input pins (OSC32_IN and OSC32_OUT) and 1

TAMP input signal detection pin (TAMP); the clock source can select external 32.768kHz crystal

oscillator, resonator or oscillator, LSICLK and HSECLK/128; it is supplied by VDD by default;

when VDD is powered off, it can be automatically switched to VBAT power supply, and RTC

configuration and time data will not be lost; RTC configuration and time data are not lost in case

of system resetting, software resetting and power resetting; it supports clock and calendar

functions.

4.13.1.

Backup register

84Bytes backup register is built in, and is supplied by VDD by default; when VDD is powered off, it

can be automatically switched to VBAT power supply, and the data in backup register will not be

lost; the data in backup register will not be lost in case of system resetting, software resetting

and power resetting.

4.14.

CRC

A CRC (cyclic redundancy check) calculation unit is built in, which can generate CRC codes

and operate 8-bit, 16-bit and 32-bit data.

4.15.

FPU

The product has built-in independent FPU floating-point operation processing unit, supports

IEEE754 standard, supports single-precision floating-point operation, and supports algorithms

such as CMP, SUM, SUB, PRDCT, MAC, DIV, INVRGSQT, RGSQT, SUMSQ, DOT, floating-

point to integer conversion and integer to floating point conversion.

APM32E103CEU6-R 데이터시트(PDF) 33 Page - Geehy Semiconductor Co., Ltd.