參數(shù)資料
型號： M44C892
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20
封裝： SSO-20
文件頁數(shù)： 75/84頁
文件大小： 643K
代理商： M44C892
M44C892
M44C892
M44C092
Rev. A5, 14-Dec-01
77 (84)
5.3
AC Characteristics
Operation Cycle Time (VSS = 0 V)
Parameters
Test Conditions / Pins
Symbol
Min.
Typ.
Max.
Unit
System clock cycle
VDD = 1.8 to 6.5 V
Tamb = –40 to 85
°C
tSYSCL
500
2000
ns
VDD = 2.4 to 6.5 V
Tamb = –40 to 85
°C
tSYSCL
250
2000
ns
Supply voltage VDD = 1.8 to 6.5 V, VSS = 0 V, Tamb = 25
°C unless otherwise specified.
Parameters
Test Conditions / Pins
Symbol
Min.
Typ.
Max.
Unit
Timer 2 input timing Pin T2I
Timer 2 input clock
fT2I
5
MHz
Timer 2 input LOW time
Rise / fall time < 10 ns
tT2IL
100
ns
Timer 2 input HIGH time
Rise / fall time < 10 ns
tT2IH
100
ns
Timer 3 input timing Pin T3I
Timer 3 input clock
fT3I
SYSCL/2
MHz
Timer 3 input LOW time
Rise / fall time < 10 ns
tT3IL
2
tSYSCL
ns
Timer 3 input HIGH time
Rise / fall time < 10 ns
tT3IH
2
tSYSCL
ns
Interrupt request input timing
Int. request LOW time
Rise / fall time < 10 ns
tIRL
100
ns
Int. request HIGH time
Rise / fall time < 10 ns
tIRH
100
ns
External system clock
EXSCL at OSC1, ECM =
EN
Rise / fall time < 10 ns
fEXSCL
0.5
4
MHz
EXSCL at OSC1, ECM = DI
Rise / fall time < 10 ns
fEXSCL
0.02
4
MHz
Input HIGH time
Rise / fall time < 10 ns
tIH
0.1
s
Reset timing
Power-on reset time
VDD u VPOR
tPOR
1.5
5
ms
RC oscillator 1
Frequency
fRcOut1
3.8
MHz
Stability
VDD = 2.0 to 6.5 V
Tamb = –40 to 85
°C
f/f
"50
%
RC oscillator 2 – external resistor
Frequency
Rext = 170 k
fRcOut2
4
MHz
Stability
VDD = 2.0 to 6.5 V
Tamb = –40 to 85
°C
f/f
"15
%
Stabilization time
tS
10
s
4-MHz crystal oscillator (operating range VDD = 2.2 V to 6.5 V)
Frequency
fX
4
MHz
Start-up time
tSQ
5
ms
Stability
f/f
–10
10
ppm
Integrated input / output
capacitances
(mask programmable)
CIN / COUT programmable
in steps of 2 pF
CIN
COUT
0
20
pF
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