SPRS230M – OCTOBER 2003 – REVISED MARCH 2011
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6.4
Current Consumption
Table 6-1. TMS320F2809, TMS320F2808 Current Consumption by Power-Supply Pins at 100-MHz
SYSCLKOUT
MODE
TEST CONDITIONS
The following peripheral
clocks are enabled:
•
ePWM1/2/3/4/5/6
•
eCAP1/2/3/4
•
eQEP1/2
•
eCAN-A
•
SCI-A/B
•
SPI-A
•
ADC
•
I2C
All PWM pins are toggled
at 100 kHz.
All I/O pins are left
unconnected.
Data is continuously
transmitted out of the
SCI-A, SCI-B, and
eCAN-A ports. The
hardware multiplier is
exercised.
Code is running out of
flash with 3 wait-states.
XCLKOUT is turned off.
Flash is powered down.
XCLKOUT is turned off.
The following peripheral
clocks are enabled:
•
eCAN-A
•
SCI-A
•
SPI-A
•
I2C
Flash is powered down.
Peripheral clocks are off.
Flash is powered down.
Peripheral clocks are off.
Input clock is disabled.
I
DD
TYP
(5)
MAX
(6)
I
DDIO
TYP
(5)
(1)
I
DD3VFL
TYP
(2)
I
DDA18
TYP
(5)
(3)
I
DDA33
TYP
(5)
(4)
MAX
(6)
MAX
(6)
MAX
(6)
MAX
(6)
Operational
(Flash)
195 mA
230 mA
15 mA
27 mA
35 mA
40 mA
30 mA
38 mA
1.5 mA
2 mA
IDLE
75 mA
90 mA
500
μA
2 mA
2
μA
10
μA
5
μA
50
μA
15
μA
30
μA
STANDBY
6 mA
12 mA
100
μA
500
μA
2
μA
10
μA
5
μA
50
μA
15
μA
30
μA
HALT
70
μA
60
μA
120
μA
2
μA
10
μA
5
μA
50
μA
15
μA
30
μA
(1)
(2)
(3)
(4)
(5)
(6)
I
DDIO
current is dependent on the electrical loading on the I/O pins.
The I
DD3VFL
current indicated in this table is the flash read-current and does not include additional current for erase/write operations.
During flash programming, extra current is drawn from the V
DD
and V
DD3VFL
rails, as indicated in
If the user application
involves on-board flash programming, this extra current must be taken into account while architecting the power-supply stage.
I
DDA18
includes current into V
DD1A18
and V
DD2A18
pins. In order to realize the I
DDA18
currents shown for IDLE, STANDBY, and HALT,
clock to the ADC module must be turned off explicitly by writing to the PCLKCR0 register.
I
DDA33
includes current into V
DDA2
and V
DDAIO
pins.
TYP numbers are applicable over room temperature and nominal voltage.
MAX numbers are at 125°C and MAX voltage.
NOTE
The peripheral - I/O multiplexing implemented in the 280x devices prevents all available
peripherals from being used at the same time. This is because more than one peripheral
function may share an I/O pin. It is, however, possible to turn on the clocks to all the
peripherals at the same time, although such a configuration is not useful. If this is done, the
current drawn by the device will be more than the numbers specified in the current
consumption tables.
96
Electrical Specifications
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