Infineon XC800 Series, Руководство пользователя

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AP08056
Power Saving Features
Reducing Clock Speed (Slow-Down Mode)
Application Note 9 V1.0, 2006-12
Figure 1 Graphical representation of the X and Y series in Table 3
Table 3 Current comparison between slow-down mode and slow-down-idle
mode of a XC866-1FR device
f
SYS
= 80.4 MHz Current (mA)
Peripheral
1)
Frequency (MHz)
1) Peripheral frequency = f
SYS
/CLKREL/Fixed divider of 3 (refer to user’s manual on Clock System)
CLKREL Slow-Down
(X)
Slow-Down-
Idle (Y)
Difference
2)
X - Y
2) Negative value indicates that slow-down-idle mode current > slow-down mode current.
26.800 0000
B
15.50 11.87 3.63
6.700 0010
B
7.12 6.41 0.71
3.350 0011
B
5.70 5.47 0.23
1.675 0100
B
4.99 5.01 0.02
0.419 0110
B
4.45 4.66 -0.21
0.209 0111
B
4.36 4.36 -0.00
0.105 1000
B
4.32 4.57 -0.25
0.052 1001
B
4.30 4.56 -0.26
0.026 1010
B
4.28 4.55 -0.27
0.013 1011
B
4.28 4.54 -0.26
0
2
4
6
8
1 0
1 2
1 4
1 6
1 8
2 6 .8 0 0 6 .7 0 0 3 .3 5 0 1 .6 7 5 0 .4 1 9 0 .2 0 9 0 .1 0 5 0 .0 5 2 0 .0 2 6 0 .0 1 3
P e r ip h e r a l C lo c k Fr e q u e n c y ( M Hz ) - X C 8 4 6
Cu
rr
en
t (
m
A)
X Y