Datasheet

C505/C505C/C505A/C505CA
Data Sheet 61 12.00
Figure 29
I
DD
Diagram of C505 and C505C
C505/C505C : Power Supply Current Calculation Formulas
Note:
f
osc
is the oscillator frequency in MHz. I
DD
values are given in mA.
Parameter Symbol Formula
Active mode
I
DD typ
I
DD max
1.5
*
f
OSC
+ 1.3
1.5
*
f
OSC
+ 9.0
Idle mode
I
DD typ
I
DD max
0.74
*
f
OSC
+ 1.4
1.0
*
f
OSC
+ 1.0
Active mode with
slow-down enabled
I
DD typ
I
DD max
0.11
*
f
OSC
+ 2.6
0.25
*
f
OSC
+ 2.5
Idle mode with
slow-down enabled
I
DD typ
I
DD max
0.1
*
f
OSC
+ 2.0
0.25
*
f
OSC
+ 2.0
I
DD
[mA]
I
DD
max
I
DD
typ
5
10
15
20
25
30
f
OSC
[MHz]
12842016
C505
C505C
35
40
I
d
l
e
M
o
d
e
Id
l
e M
ode
A
c
t
i
v
e
M
o
d
e
A
c
t
i
v
e
M
o
d
e
I
d
l
e
M
o
d
e
+
S
l
o
w
-
d
o
w
n
A
c
t
ive
M
o
d
e
+S
lo
w
-
d
o
wn