ST72324BJ2 datasheet(174/188 Pages) STMICROELECTRONICS

Part #	ST72324BJ2

Description	8-bit MCU, 3.8 to 5.5 V operating range with 8 to 32 Kbyte Flash/ROM, 10-bit ADC, 4 timers, SPI, SCI

PDF	188 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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174 / 188 page

Device configuration and ordering information

ST72324B

174/188

OPT3:1 OSCRANGE[2:0]

Oscillator range

When the resonator oscillator type is selected, these option bits select

the resonator oscillator current source corresponding to the frequency

range of the used resonator. When the external clock source is

selected, these bits are set to medium power (2 ~ 4 MHz)

000: Typ. frequency range (LP) = 1 ~ 2 MHz

001: Typ. frequency range (MP) = 2 ~ 4 MHz

010: Typ. frequency range (MS) = 4 ~ 8 MHz

011: Typ. frequency range (HS) = 8 ~ 16 MHz

OPT0

PLL OFF

PLL activation

This option bit activates the PLL which allows multiplication by two of

the main input clock frequency. The PLL must not be used with the

internal RC oscillator. The PLL is guaranteed only with an input

frequency between 2 and 4 MHz.

0: PLL x2 enabled

1: PLL x2 disabled

Caution: The PLL can be enabled only if the “OSCRANGE” (OPT3:1)

bits are configured to “MP - 2~4 MHz”. Otherwise, the device

functionality is not guaranteed.

Table 121.

Package selection (OPT7)

Version

Selected package

PKG1

LQFP44/SDIP42

LQFP32/SDIP32

Table 120.

Option byte 1 bit description (continued)

Bit

Name

Function

ST72324BJ2 Datasheet(PDF) 174 Page - STMicroelectronics