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ST92250DR1TC View Datasheet(PDF) - STMicroelectronics

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Description
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ST92250DR1TC Datasheet PDF : 429 Pages
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ST92F124/F150/F250 - ELECTRICAL CHARACTERISTICS
RCCU CHARACTERISTICS
(VDD = 5V ± 10%, TA = –40°C to +125°C, CLoad = 50pF, fINTCLK = 24MHz, unless otherwise specified)
Symbol
Parameter
Comment
Value
Min
Typ (1)
Unit
Max
VIHRS
VILRS
VIRS
VHYRS
ILKRS
RESET Input High Level
RESET Input Low Level
Input Voltage Range
RESET Input Hysteresis
RESET Pin Input Leakage
Input Threshold
Input Threshold
0V < VIN < VDD
0.75 x VDD
V
0.25 x VDD
V
– 0.3
1 (2)
VDD + 0.3
V
V
–1
1
µA
Note:
(1) Unless otherwise stated, typical data are based on TA= 25°C and VDD= 5V. They are only reported for design guide lines not tested in
production.
(2) Value guaranteed by design.
RCCU TIMING TABLE
(VDD = 5V ± 10%, TA = –40°C to +125°C, fINTCLK = 24 MHz, unless otherwise specified)
Symbol
Parameter
Comment
tFRS
tNFR
tRSPH(3)
tSTR
RESET Input Filtered Pulse(2)
RESET Input Non Filtered
Pulse(2)
RESET Phase duration
STOP Restart duration
DIV2 = 0
DIV2 = 1
Value
Min
Typ (1)
Unit
Max
50
ns
20
µs
20400
Tosc
10200
20400
Tosc
Note:
(1) Unless otherwise stated, typical data are based on TA= 25°C and VDD= 5V. They are only reported for design guide lines not tested in
production.
(2) To be valid, a RESET pulse must exceed tNFR. All reset glitches with a duration shorter than tFRS will be filtered
(3) Depending on the delay between rising edge of RESET pin and the first rising edge of CLOCK1, the value can differ from the typical value
for +/- 1 CLOCK1 cycle.
Legend: Tosc = Crystal Oscilllator Clock (CLOCK1) period.
BOOTROM TIMING TABLE
Symbol
tBRE
Parameter
BOOTROM Execution Duration
(see Figure 65 on page 137) (2)
Conditions
fOSC = 4MHz
Typ Value (1)
33
Unit
ms
Note:
(1) Unless otherwise stated, typical data are based on TA= 25°C and VDD= 5V. They are only reported for design guide lines not tested in
production
(2) Refer to AN1528 for more details on BOOTROM code.
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