ST72334J4TC View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72334J4TC

8-bit MCU for automotive with single voltage Flash/ROM memory, ADC, 16-bit timers, SPI, SCI interfaces

STMicroelectronics 

ST72334xx-Auto, ST72314xx-Auto, ST72124Jx-Auto

CLOCK AND TIMING CHARACTERISTICS (Cont’d)

15.5.3.2 Typical Ceramic Resonators

Symbol

Parameter

Conditions

Typ

Unit

LP

2MHz

4.2

MP

4MHz

2.1

tSU(osc)

Ceramic resonator start-up time

MS

8MHz

1.1

ms

HS

16MHz

0.7

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 68. Application with Ceramic Resonator

WHEN RESONATOR WITH

INTEGRATED CAPACITORS

i2

CL1

RESONATOR

RF(EXT)

CL2

RD

OSC1

RF

OSC2

fOSC

ST72XXX

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 a high quality resonator with small RS value.

Refer to Table 23 and Table 24 and to the ceramic resonator manufacturer’s documentation for more details.

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