st52t430 STMicroelectronics, st52t430 Datasheet - Page 71

• Manufacturer Part Number: st52t430
• Description: 8-bit Intelligent Controller Unit Icu Three Timer/pwms, Adc, Sci
• Manufacturer: STMicroelectronics

12.4 Supply Current Characteristics
Supply current is mainly a function of the operating
voltage and frequency. Other factors such as I/O
pin loading and switching rate, oscillator type,
internal code execution pattern and temperature,
also have an impact on the current consumption.
Table 12.5 Supply Current in RUN and WAIT Mode
Notes:
1. CPU running with memory access, all I/O pins in input mode with a static value at V
all peripherals switched off; clock input (OSCin driven by external square wave).
2. CPU in WAIT mode with all I/O pins in input mode with a static value at V
peripherals switched off; clock input (OSCin driven by external square wave).
3. Data based on characterization results, tested in production at V
Figure 12.4 Typical IDD in RUN vs fosc
Symbol
35
30
25
20
15
10
5
0
I
DD
3.5
3.7
3.9
Supply current in RUN mode
Supply current in WAIT mode
2 M Hz
4.1
4 M Hz
4.3
VDD [V]
Parameter
5 M Hz
4.5
4.7
10 M Hz
4.9
20 M Hz
5.1
5.3
1)
2)
5.5
V
T
DD
A
=5V 5%
=90 C
The test condition in RUN mode for all the IDD
measurements are:
OSCin = external square wave, from rail to rail;
OSCout = floating;
All I/O pins tristated pulled to VDD
T
Figure 12.5 Typical IDD in WAIT vs fosc
A
Conditions
=90 C
20
18
16
14
12
10
8
6
4
2
0
3.5
f
f
f
f
f
f
osc
osc
osc
osc
3.7
osc
osc
f
f
f
f
osc
osc
osc
osc
=5 Mhz,
=2 MHz
=4 MHz
=5 MHz
=2 Mhz
=4 Mhz
DDmax
=10
=20
=10
=20
3.9
2 MHz
4.1
and f
4 MHz
4.3
17.5
33.5
10.0
18.5
Typ
4.0
7.5
9.0
2.0
4.0
5.0
oscmax
VDD [V]
5 MHz
4.5
DD
or V
4.7
10 MHz
.
DD
Max
10.0
12.0
20.0
37.0
12.0
22.0
or V
6.0
3.0
5.0
6.0
SS
4.9
20 MHz
3)
(no load), all
SS
5.1
(no load),
5.3
Unit
mA
71/88
5.5