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ST7294 数据表(PDF) 56 Page - STMicroelectronics

部件名 ST7294
功能描述  8-BIT MCU WITH 6K ROM, EEPROM AND 16-BIT TIMER WITH INPUT CAPTURE AND DUAL OUTPUT COMPARE
PDF  69 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST7294 数据表(HTML) 56 Page - STMicroelectronics

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ST72E94 - ST72T94
2.4 AC ELECTRICAL CHARACTERISTICS (T
A = -40°C to +85°C unless otherwise specified)
Notes:
1. RUN (Operating) IDD, WAIT IDD measured using external square wave clock all inputs 0.2V from rail, no DC load, less than 50pF on all
outputs, CI = 20pF on OSCout.
2. WAIT, HALT all I/O configured as inputs, VIL = 0.2V, VIH =VDD -0.2V.
3. HALT, OSCin = VSS.
2.5 Control Timing (T
A = -40°C to +85°C unless otherwise specified)
Note 1. The minimum period tILIL should not be less than the number of cycle times it takes to execute the interrupt service routine plus 21
cycles.
Symbol
Parameter
Test Conditions
Value
Unit
Min.
Typ.
Max.
VDD
Operating Supply Voltage
RUN Mode
HALT Mode
EEPROM Write
EEPROM Read
3.0
2.0
3.0
3.0
5.5
V
IDD
Supply Current (1) (2) (3)
RUN Mode
VDD=5V,fOSC=4MHz
VDD=3.0V,fOSC=455KHz
WAIT Mode
VDD=5V,fOSC=4MHz
VDD=3.0V,fOSC=455KHz
HALT MODE
VDD=5V,TA=70°C
1.8
0.9
1
2.5
0.7
1.5
500
10
mA
mA
mA
mA
µA
Symbol
Parameter
Test Condition s
Value
Unit
Min.
Typ.
Max.
f
OSC
Frequency of Operation
VDD=5V
VDD=3.0V
DC
DC
4
2
MHz
tILCH
HALT Mode Recovery
Startup Time
Crystal Oscillator
50
ms
tRL
External RESET Input
Pulse Width
1.5
tCYC
tPORL
Power RESET Output
4096
tCYC
tDOGL
Watchdog RESET
Output Pulse Width
1.5
tDOG
Watchdog Time-out
6144
7168
tCYC
tILIH
Interrupt Pulse Width
INT
PORTC
125
125
ns
tILIL
Interrupt Pulse Period
(1)
tCYC
tOXOV
Crystal Oscillator
Startup Time
50
ms
tDDR
Supply Rise Time
10% to 90%
0.01
100
ms



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