CST12.0MTWA datasheet(118/153 Pages) STMICROELECTRONICS

部件名	CST12.0MTWA

功能描述	8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES

PDF	153 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

118 / 153 page

ST72334J/N, ST72314J/N, ST72124J

118/153

CLOCK AND TIMING CHARACTERISTICS (Cont’d)

16.5.3.2 Typical Ceramic Resonators

Note:

tSU(OSC) is the typical oscillator start-up time measured between VDD=2.8V and the fetch of the first instruction (with a

quick VDD ramp-up from 0 to 5V (<50µs).

Figure 69. Application with Ceramic Resonator

Notes:

1. Resonator characteristics given by the ceramic resonator manufacturer.

2. tSU(OSC) is the typical oscillator start-up time measured between VDD=2.8V and the fetch of the first instruction (with a

quick VDD ramp-up from 0 to 5V (<50µs).

3. The oscillator selection can be optimized in terms of supply current using an high quality resonator with small RS value.

Refer to Table 22 and Table 23 and to the ceramic resonator manufacturer’s documentation for more details.

Symbol

Parameter

Conditions

Typ

Unit

tSU(osc)

Ceramic resonator start-up time

2MHz

4.2

4MHz

2.1

8MHz

1.1

16MHz

0.7

OSC2

OSC1

fOSC

CL1

CL2

ST72XXX

RESONATOR

WHEN RESONATOR WITH

INTEGRATED CAPACITORS

RF(EXT)

CST12.0MTWA 数据表(PDF) 118 Page - STMicroelectronics

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