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ST7SCR 데이터시트(PDF) 82 Page - STMicroelectronics

부품명 ST7SCR
상세설명  8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
PDF  102 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7SCR 데이터시트(HTML) 82 Page - STMicroelectronics

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ST7SCR
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14.5 MEMORY CHARACTERISTICS
Subject to general operating conditions for VDD, fOSC, and TA unless otherwise specified.
14.5.1 RAM and Hardware Registers
14.5.2 FLASH Memory
Operating Conditions: fCPU = 8 MHz.
Warning: Do not connect 12V to VPP before VDD is powered on, as this may damage the device.
14.6 SMARTCARD SUPPLY SUPERVISOR ELECTRICAL CHARACTERISTICS
(TA = 0... +70
oC, 4.0 < V
DD - VSS < 5.5V unless otherwise specified)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VRM
Data retention mode 1)
HALT mode (or RESET)
2
V
DUAL VOLTAGE FLASH MEMORY
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fCPU
Operating Frequency
Read mode
8
MHz
Write / Erase mode,
TA=25°C
8
VPP
Programming Voltage
4.0V <= VDD <= 5.5V
11.4
12.6
V
IPP
VPP Current
Write / Erase
30
mA
tPROG
Byte Programming Time
TA=25°C
100
500
µs
tERASE
Sector Erasing Time
2
10
sec
Device Erasing Time
5
10
tVPP
Internal VPP Stabilization Time
10
µs
tRET
Data Retention
TA ≤ 55°C
20
years
NRW
Write Erase Cycles
TA=25°C
100
cycles
SMARTCARD SUPPLY SUPERVISOR
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
5V regulator output (for IEC7816-3 Class A Cards)
VCARD
SmartCard Power Supply Voltage
4.6
5.00
5.4
V
ISC
SmartCard Supply Current
55
mA
IOVDET
Current Overload Detection
120 1)
mA
tIDET
Detection time on Current Overload
170 1)
1400 1)
µs
tOFF
VCARD Turn off Time (see Figure 35 on
page 61)
CLOADmax ≤ 4.7uF
750
µs
tON
VCARD Turn on Time (see Figure 35 on
page 61)
CLOADmax ≤ 4.7uF
150
500
µs
IVDD
VDD supply current
See note
100
mA
3V regulator output (for IEC7816-3 Class B Cards)
VCARD
SmartCard Power Supply Voltage
2.7
3.3
V
ISC
SmartCard Supply Current
50
mA
IOVDET
Current Overload Detection
100 1)
mA
tIDET
Detection time on Current Overload
170 1)
1400 1)
us
tOFF
VCARD Turn off Time (see Figure 35 on
page 61)
CLOADmax≤4.7uF
750
us



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