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ST7285C Datenblatt(PDF) 110 Page - STMicroelectronics

Teilenummer ST7285C
Bauteilbeschribung  8-BIT MCU FOR RDS WITH 48K ROM, 3K RAM, ADC, TWO TIMERS, TWO SPIs, I2C AND SCI INTERFACES
PDF  117 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7285C Datenblatt(HTML) 110 Page - STMicroelectronics

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ST72E85 ST72T85
2.4 AC ELECTRICAL CHARACTERISTICS
(TA = -40 to +85
°C unless otherwise specified)
2.5 CONTROL TIMING
(Operating conditions T
A = -40 to +85°C unless otherwise specified)
Note: 1. The minimum period t
ILIL should not be less than the number of cycle times it takes to execute the
interrupt service routine plus 21 cycles.
Symbol
Parameter
Conditions
Value
Unit
Min
Typ.
Max
V
DD
Operating Supply Voltage
4.332 MHz Internal
4.5
5.5
V
I
DD
Supply Current
RUN Mode f
EXT = 8.664MHz
VDD = 5.0V, fINT = 4.332MHz
WAIT Mode f
EXT = 8.664MHz
V
DD = 5.5V, fINT = 4.332MHz
HALT Mode, V
DD =5.0V
3
TBD
20
5
mA
mA
µA
VRM
Data Retention Mode
HALT Mode
2
V
Symbol
Parameter
Test Condition s
Value
Unit
Min
Typ.
Max
f
OSC
Frequency of Operation
V
DD = 4.5V
f external
f internal
8.664
4.332
MHz
t
ILCH
Halt Mode Recovery
Startup Time
Crystal Resonator
20
ms
t
RL
External RESET
Input pulse Width
1.5
t
CYC
t
PORL
Power Reset Duration
4096
t
CYC
TDOGL
Watchdog RESET
Output Pulse Width
200
ns
t
DOG
Watchdog Time-out
12,288
786,432
t
CYC
tILIL
Interrupt Pulse Period
(1)
tCYC
tOXOV
Crystal Oscillator
Start-up Time
50
ms
tDDR
Power up rise time
VDD min
100
ms



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