参数资料
型号: ST72T774S9T1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP44
封装: TQFP-44
文件页数: 41/144页
文件大小: 1280K
代理商: ST72T774S9T1
ST72774/ST727754/ST72734
135/144
AC/DC ELECTRICAL CHARACTERISTICS (Cont’d)
Note: Note: All voltages are referred to VSS unless otherwise specified.
STANDARD I/O PORT PINS
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOL
Output Low Level Voltage
Port A[7,2:0], Port B[7:4],
Port C[7:0], Port D[6:0]
Push Pull
IOL = -1.6mA VDD=5V
-
0.4
V
VOL
Output Low Level Voltage Port A[6:3]
Open Drain
IOL = -1.6mA VDD=5V
-
0.4
V
VOL
Output Low Level Voltage
Port A and Port C
IOL = -10mA VDD=5V
-
1.5
V
VOL
Output Low Level Voltage Port B[3:0]
Open Drain
IOL = -3mA VDD=5V
-
0.4
V
VOH
Output High Level Voltage
Port A[7, 2:0], Port B[7:4],
Port C [7:0], Port D [6:0]
Push Pull
IOH = 1.6mA
VDD-0.8
-
V
VIH
Input High Level Voltage Port A [7:0],
Port B [7:0], Port C [7:0], Port D[6:0],
RESET
Leading Edge
0.7xVDD
VDD
V
VIH
HSYNC,VSYNCI, CSYNCI, HFBACK,
VFBACK
VDD= 5V
2.0
V
VIL
HSYNC,VSYNCI, CSYNCI, HFBACK,
VFBACK
VDD= 5V
0.8
V
VIL
Input Low Voltage Port A [7:0],
Port B[7:0], Port C[7:0], Port D [6:0],
RESET
Trailing Edge
VSS
0.3xVDD
V
IIL
I/O Ports Hi-Z Leakage Current
Port A [7:0], Port B[7:0], Port C[7:0],
Port D [6:0], RESET
10
A
COUT
CIN
Capacitance: Ports (as Input or
Output), RESET
12
8
pF
IRPU
Pull-up resistor current
VDD=5V VIN=VSS T=25°C
280
A
POWER ON/OFF Electrical Specifications
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VTRH
Power ON/OFF Reset Trigger
VDD rising edge
VDD Variation 50mV/mS
3.35
3.65
3.9
V
VTRL
Power ON/OFF Reset Trigger
VDD falling edge
VDD Variation 50mV/mS
3.1
3.4
3.7
V
VTRM
VDD minimum for Power ON/OFF Reset
active
VDD Variation 50mV/mS
2.0
2.2
V
VTRHyst
Power ON/OFF LVD Hysteresis
VDD Variation 50mV/mS
250
mV
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