ST72F324J2TATRS View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST72F324J2TATRS

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

STMicroelectronics 

Electrical characteristics

ST72324xx-Auto

12.6

12.6.1

Clock and timing characteristics

Subject to general operating conditions for VDD, fCPU, and TA.

General timings

Table 92. General timings

Symbol

Parameter

Conditions Min Typ(1) Max Unit

tc(INST) Instruction cycle time

2

fCPU = 8 MHz 250

3

12 tCPU

375 1500 ns

Obsolete Product(s) - Obsolete Product(s) 12.6.2

tv(IT)

10

Interrupt reaction time tv(IT) = Δtc(INST) + 10(2)

fCPU = 8 MHz 1.25

22 tCPU

2.75 µs

1. Data based on typical application software.

2. Time measured between interrupt event and interrupt vector fetch. Δtc(INST) is the number of tCPU cycles

needed to finish the current instruction execution.

External clock source

Table 93. External clock source

Symbol

Parameter

Conditions Min Typ Max Unit

VOSC1H OSC1 input pin high level voltage

VOSC1L OSC1 input pin low level voltage

VDD-1

VSS

VDD

V

VSS+1

tw(OSC1H)

tw(OSC1L)

OSC1 high or low time(1)

tr(OSC1)

tf(OSC1)

OSC1 rise or fall time(1)

See Figure 67.

5

ns

15

Ilkg OSC1 input leakage current

VSS < VIN < VDD

±1 µA

1. Data based on design simulation and/or technology characteristics, not tested in production.

Figure 67. Typical application with an external clock source

VOSC1H

90%

10%

VOSC1L

tr(OSC1)

tf(OSC1)

tw(OSC1H)

tw(OSC1L)

External

clock source

OSC2

OSC1

Not connected internally

fOSC

Ilkg

ST72XXX

154/193

Doc ID 13841 Rev 1

Share Link: