ST72521R9-Auto STMicroelectronics, ST72521R9-Auto Datasheet - Page 75
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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ST72521xx-Auto
Figure 29. I/O port general block diagram
Table 29.
1. The diode to V
Legend:
Input
Output
REGISTER
ACCESS
EXTERNAL
INTERRUPT
SOURCE (ei
V
SS
Off - Implemented not activated
On - Implemented and activated
NI
is implemented to protect the device against positive stress.
DDR SEL
OR SEL
DR SEL
- Not implemented
Configuration mode
Floating with/without Interrupt
Pull-up with/without Interrupt
Push-pull
Open-drain (logic level)
True open-drain
DDR
DR
OR
x
I/O port mode options
)
DD
is not implemented in the true open-drain pads. A local protection between the pad and
ALTERNATE
OUTPUT
ALTERNATE
ENABLE
If implemented
1
0
Doc ID 17660 Rev 1
1
0
Pull-up
Off
On
Off
NI
N-BUFFER
PULL-UP
CONDITION
P-buffer
Off
On
Off
NI
SCHMITT
TRIGGER
CMOS
V
DD
to V
NI
On
(1)
DD
P-BUFFER
(see table below)
V
Diodes
DD
DIODES
(see table below)
PULL-UP
(see table below)
ALTERNATE
ANALOG
to V
INPUT
I/O ports
INPUT
PAD
On
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SS
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