參數(shù)資料
型號： TMS320M642AZNZ7
廠商： Texas Instruments, Inc.
英文描述： 1A, 52kHz (250kHz Max) Current Mode PWM Control Circuit with 16V UVLO Threshold and 48% Max Duty Cycle; Package: SOIC 14 LEAD; No of Pins: 14; Container: Tape and Reel; Qty per Container: 2500
中文描述： 視頻/影像定點(diǎn)數(shù)字信號處理器
文件頁數(shù)： 85/123頁
文件大小： 1205K
代理商： TMS320M642AZNZ7
www.ti.com
6.4.1
Reducing Current Consumption
TMS320F2808, TMS320F2806
TMS320F2801, UCD9501
Digital Signal Processors
SPRS230F–OCTOBER 2003–REVISED SEPTEMBER 2005
Table 6-3. TMS320F2801/UCD9501 Current Consumption by Power-supply Pins at 100-MHz SYSCLKOUT
I
DD
I
DDIO(1)
I
DD3VFL
I
DDA18(2)
I
DDA33(3)
MODE
TEST CONDITIONS
TYP
(4)
MAX
TYP
(4)
MAX
TYP
(4)
MAX
TYP
(4)
MAX
TYP
(4)
MAX
The following peripheral
clocks are enabled:
ePWM1/2/3
eCAP1/2
eQEP1
eCAN-A
SCI-A
SPI-A
ADC
I
2
C
All PWM pins are toggled at
100 kHz.
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.
Operational
(Flash)
180 mA
210 mA
15 mA
27 mA
35 mA
40 mA
30 mA
38 mA
1.5 mA
2 mA
Flash is powered down.
XCLKOUT is turned off.
The following peripheral
clocks are enabled:
eCAN-A
SCI-A
SPI-A
I
2
C
Flash is powered down.
Peripheral clocks are off.
IDLE
75 mA
90 mA
500
μ
A
2 mA
2
μ
A
10
μ
A
5
μ
A
50
μ
A
15
μ
A
30
μ
A
STANDBY
6 mA
12 mA
100
μ
A
500
μ
A
2
μ
A
10
μ
A
5
μ
A
50
μ
A
15
μ
A
30
μ
A
Flash is powered down.
Peripheral clocks are off.
Input clock is disabled.
HALT
70
μ
A
60
μ
A
120
μ
A
2
μ
A
10
μ
A
5
μ
A
50
μ
A
15
μ
A
30
μ
A
(1)
(2)
(3)
(4)
I
DDIO
current is dependent on the electrical loading on the I/O pins.
I
DDA18
includes current into V
DD1A18
and V
DD2A18
pins.
I
includes current into V
and V
The TYP numbers are applicable over room temperature and nominal voltage.
280x devices have a richer peripheral mix compared to the 281x family. While the McBSP has been
removed, the following new peripherals have been added on the 280x:
3 SPI modules
1 CAN module
1 I
2
C module
The two event manager modules of the 281x have been enhanced and replaced with separate ePWM (6),
eCAP (4) and eQEP (2) modules, providing tremendous flexibility in applications. Like 281x, 280x DSPs
incorporate a unique method to reduce the device current consumption. Since each peripheral unit has an
individual clock-enable bit, significant reduction in current consumption can be achieved by turning off the
clock to any peripheral module that is not used in a given application. Furthermore, any one of the three
low-power modes could be taken advantage of to reduce the current consumption even further.
Table 6-4
indicates the typical reduction in current consumption achieved by turning off the clocks.
Electrical Specifications
85
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