ST72521R9-Auto STMicroelectronics, ST72521R9-Auto Datasheet - Page 242
ST72521R9-Auto
Manufacturer Part Number
ST72521R9-Auto
Description
8-bit MCU for automotive
Manufacturer
STMicroelectronics
Datasheet
1.ST72521R9-AUTO.pdf
(276 pages)
Specifications of ST72521R9-Auto
Hdflash Endurance
100 cycles, data retention 20 years
Clock Sources
crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
4 Power Saving Modes
Halt, Active Halt, Wait and Slow
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Electrical characteristics
Figure 106. RESET pin protection when LVD is disabled
Note:
20.9.2
242/276
Required
EXTERNAL
CIRCUIT
RESET
USER
The reset network protects the device against parasitic resets.
The output of the external reset circuit must have an open-drain output to drive the ST7
reset pad. Otherwise the device can be damaged when the ST7 generates an internal reset
(LVD or watchdog).
Whether the reset source is internal or external, the user must ensure that the level on the
RESET pin can go below the V
Otherwise the reset will not be taken into account internally.
Because the reset circuit is designed to allow the internal RESET to be output in the RESET
pin, the user must ensure that the current sunk on the RESET pin is less than the absolute
maximum value specified for I
ICCSEL/V
Subject to general operating conditions for V
Table 149. ICCSEL/V
1. Data based on design simulation and/or technology characteristics, not tested in production.
Symbol
V
V
I
lkg
IH
IL
0.01µF
PP
Input low level voltage
Input high level voltage
Input leakage current
pin
Parameter
PP
pin characteristics
INJ(RESET)
Doc ID 17660 Rev 1
IL
(1)
maximum level specified in
(1)
V
DD
R
ON
in
Filter
Section 20.2.2 on page
Flash versions
ROM versions
Flash versions
ROM versions
DD
Conditions
, f
V
IN
CPU
= V
GENERATOR
, and T
SS
PULSE
A
Section 20.9.1 on page
unless otherwise specified.
0.7xV
V
DD
Min
V
V
SS
SS
-0.1
220.
DD
ST72521xx-Auto
0.3xV
INTERNAL
RESET
Max
12.6
V
0.2
±1
WATCHDOG
DD
DD
ST72XXX
240.
Unit
µA
V
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