参数资料
型号: M44C092
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20
封装: SSO-20
文件页数: 76/84页
文件大小: 643K
代理商: M44C092
M44C892
M44C092
Rev. A5, 14-Dec-01
78 (84)
Unit
Max.
Typ.
Min.
Symbol
Test Conditions / Pins
Parameters
32-kHz crystal oscillator (operating range VDD = 2.0 V to 6.5 V)
Frequency
fX
32.768
kHz
Start-up time
tSQ
0.5
s
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
External 32-kHz crystal parameters
Crystal frequency
fX
32.768
kHz
Serial resistance
RS
30
50
k
Static capacitance
C
0
1.5
pF
Dynamic capacitance
C1
3
fF
External 4-MHz crystal parameters
Crystal frequency
fX
4.0
MHz
Serial resistance
RS
40
150
Static capacitance
C
0
1.4
3
pF
Dynamic capacitance
C1
3
fF
Crystal Characteristics
L
C1
RS
C0
OSCIN
OSCOUT
Equivalent
circuit
96 11553
SCLIN
SCLOUT
Figure 89. Crystal equivalent circuit
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
EEPROM
Operating current during
erase/write cycle
IWR
600
1300
A
Endurance
Erase- / write-cycles
ED
500,000
1,000,000
Cycles
Data erase/write cycle time
for 16-bit access
tDEW
9
12
ms
Data retension time
tDR
10
years
Power-up to read operation
tPUR
0.2
ms
Power-up to write opera-
tion
tPUW
0.2
ms
Serial interface
SCL clock frequency
fSC_MCL
100
500
kHz
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