Infineon XC800 Series, Руководство пользователя

Страница: 25 / 28

AP08056
Power Saving Features
A Timer 2 Example
Application Note 25 V1.0, 2006-12
The current consumed by the devices were even lower than those measured in Table 16
and Table 17 . This is because the system frequency is much lower in prescaler mode
than in PLL mode.
Table 18 Current consumed by XC866-4FR device when timer 2 is active
f
SYS
= 4.99 MHz Current (mA)
Peripheral
Frequency (KHz) CLKREL Slow-Down
(X)
Slow-Down-
Idle (Y)
Difference
X - Y
1663.33 0000
B
3.58 3.40 0.18
831.67 0001
B
3.17 3.13 0.04
415.83 0010
B
2.95 2.98 -0.03
103.96 0100
B
2.78 2.87 -0.09
51.98 0101
B
2.76 2.85 -0.09
25.99 0110
B
2.74 2.84 -0.10
12.99 0111
B
2.73 2.83 -0.10
Table 19 Current consumed by XC888 device when timer 2 is active
f
SYS
= 4.825 MHz Current (mA)
Peripheral
Frequency (KHz) CLKREL Slow-Down
(X)
Slow-Down-
Idle (Y)
Difference
X - Y
1206.25 0000
B
4.11 3.60 0.51
603.13 0010
B
3.55 3.23 0.32
301.56 0100
B
3.26 3.04 0.22
150.78 0110
B
3.12 2.95 0.17
100.52 0111
B
3.08 2.92 0.16
75.39 1000
B
3.05 2.90 0.15
37.70 1010
B
3.02 2.89 0.13
18.85 1100
B
3.00 2.88 0.12