ST72F324J2TCRS View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72F324J2TCRS

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 

ST72324xx-Auto

Electrical characteristics

Table 97. PLL characteristics

Symbol

Parameter

Δ fCPU/fCPU Instantaneous PLL jitter(1)

1. Data characterized but not tested

Conditions

fOSC = 4 MHz

fOSC = 2 MHz

Min Typ Max Unit

1.0 2.5

%

2.5 4.0

The user must take the PLL jitter into account in the application (for example, in serial

communication or sampling of high frequency signals). The PLL jitter is a periodic effect,

which is integrated over several CPU cycles. Therefore the longer the period of the

application signal, the less it will be impacted by the PLL jitter.

Figure 70 shows the PLL jitter integrated on application signals in the range 125 kHz to

) 2 MHz. At frequencies of less than 125 kHz, the jitter is negligible.

ct(s Figure 70. Integrated PLL jitter vs signal frequency(1)

du +/-Jitter (%)

ro 1.2

1

P 0.8

FLASH typ

ROM max

ROM typ

te 0.6

le 0.4

o 0.2

bs 0

4 MHz 2 MHz 1 MHz 500 kHz 250 kHz 125 kHz

OApplication Frequency

t(s) - 1. Measurement conditions: fCPU = 8 MHz

duc 12.7

Obsolete Pro 12.7.1

Memory characteristics

RAM and hardware registers

Table 98. RAM and hardware registers

Symbol

Parameter

Conditions

VRM Data retention mode(1)

Halt mode (or Reset)

Min Typ Max Unit

1.6

V

1. Minimum VDD supply voltage without losing data stored in RAM (in Halt mode or under Reset) or in

hardware registers (only in Halt mode). Not tested in production.

12.7.2

Flash memory

Table 99. Dual voltage HDFlash memory

Symbol

Parameter

Conditions

fCPU

VPP

Operating frequency

Programming voltage(2)

Read mode

Write/Erase mode

4.5V < VDD < 5.5V

Min(1) Typ Max(1) Unit

0

8

MHz

1

8

11.4

12.6 V

Doc ID 13841 Rev 1

157/193

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