ST72F521R9TC View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72F521R9TC

8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE

STMicroelectronics 

ST72521

12.6 MEMORY CHARACTERISTICS

12.6.1 RAM and Hardware Registers

Symbol

Parameter

VRM

Data retention mode 1)

Conditions

Min

Typ

Max

Unit

HALT mode (or RESET)

1.6

V

12.6.2 FLASH Memory

DUAL VOLTAGE HDFLASH MEMORY

Symbol

Parameter

Conditions

Min 2)

Typ

Max 2)

Unit

fCPU

VPP

IDD

Operating frequency

Programming voltage 3)

Supply current4)

IPP

VPP current4)

Read mode

0

Write / Erase mode

1

8

MHz

8

4.5V ≤ VDD ≤ 5.5V

11.4

12.6

V

RUN mode (fCPU = 4MHz)

Write / Erase

3

mA

0

Power down mode / HALT

Read (VPP=12V)

Write / Erase

1

10

µA

200

30

mA

tVPP

tRET

NRW

TPROG

TERASE

Internal VPP stabilization time

Data retention

Write erase cycles

Programming or erasing tempera-

ture range

TA=55°C

TA=25°C

10

20

100

-40

25

µs

years

cycles

85

°C

Notes:

1. Minimum VDD supply voltage without losing data stored in RAM (in HALT mode or under RESET) or in hardware reg-

isters (only in HALT mode). Not tested in production.

2. Data based on characterization results, not tested in production.

3. VPP must be applied only during the programming or erasing operation and not permanently for reliability reasons.

4. Data based on simulation results, not tested in production.

Warning: Do not connect 12V to VPP before VDD is powered on, as this may damage the device.

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