參數(shù)資料
型號: M44C090-H
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: Low-Current Microcontroller for Wireless Communication
中文描述: 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20
封裝: SSO-20
文件頁數(shù): 59/63頁
文件大?。?/td> 503K
代理商: M44C090-H
M44C890
M44C090
Rev.A4, 14-Dec-01
59 (63)
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
V
DD
( V )
f
R
T
amb
=
40 C
25 C
85 C
Figure 69. Internal RC frequency vs. V
DD
M44C090
3.4
3.6
3.8
4.0
4.2
4.4
4.6
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
V
DD
( V )
f
R
Tamb =
40 C
25 C
85 C
R
ext
= 170 kOhm
Figure 70. External RC frequency vs. V
DD
0.01
0.10
1.00
10.00
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
V
DD
( V )
SYSCLKmax
f
S
SYSCLKmin
Figure 71. System clock vs. V
DD
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
40
20
0
20
40
60
80
f
R
T
amb
( C )
V
DD
= 6.5 V
2 V
Figure 72. Internal RC frequency vs. T
amb
M44C090
3.4
3.6
3.8
4.0
4.2
4.4
4.6
40
30
20
10 0 10 20 30 40 50 60 70 80 90
f
R
T
amb
( C )
V
DD
= 6.5 V
3 V
2 V
R
ext
= 170 kOhm
Figure 73. External RC frequency vs. T
amb
1.5
2.5
3.5
4.5
5.5
6.5
7.5
100
150
200
250
300
350
400
f
R
R
ext
( kOhm )
max.
T
amb
= 25 C,
V
DD
= 3 V
typ.
min.
Figure 74. External RC frequency vs. R
ext
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