ST7PMC2N6B6(2004) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST7PMC2N6B6
(Rev.:2004)

8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, BRUSHLESS MOTOR CONTROL, FIVE TIMERS, SPI, LINSCI™

STMicroelectronics 

ST7MC1/ST7MC2

CLOCK AND TIMING CHARACTERISTICS (Cont’d)

11.5.3 Crystal and Ceramic Resonator Oscillators

The ST7 internal clock can be supplied with four

different Crystal/Ceramic resonator oscillators. All

the information given in this paragraph are based

on characterization results with specified typical

external components. In the application, the reso-

nator and the load capacitors have to be placed as

close as possible to the oscillator pins in order to

minimize output distortion and start-up stabiliza-

tion time. Refer to the crystal/ceramic resonator

manufacturer for more details (frequency, pack-

age, accuracy...).

Symbol

fOSC

RF

CL1

CL2

i2

Parameter

Oscillator Frequency 1)

Feedback resistor

Recommended load capacitance ver-

sus equivalent serial resistance of the

crystal or ceramic resonator (RS)

OSC2 driving current

Conditions

VDD=5V

VIN=VSS

Min

4

TBD

Max

16

TBD

See table below

Unit

MHz

kΩ

pF

TBD TBD

µA

Oscil.

MP

MS

HS

Typical Crystal or Ceramic Resonators

Reference

Freq.

Characteristic 2)

CSTCR4M00G53

4MHz

CSTCE8M00G53

8MHz

CSTCE16M0V53

16MHz

CL1

CL2

[pF]

[pF]

22

22

33

33

33

33

Figure 134. Typical Application with a Crystal or Ceramic Resonator

WHEN RESONATOR WITH

INTEGRATED CAPACITORS

CL1

OSC1

i2

fOSC

RESONATOR

RF

CL2

OSC2

ST7FMC

Notes:

1. When PLL is used, please refer to the PLL characteristics chapter and to the “supply, reset and clock management”

description chapter (fOSC min is 8 Mhz with PLL).

2. Resonator characteristics given by the crystal/ceramic resonator manufacturer.

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