參數(shù)資料
型號： TMS320C242FNA
元件分類： 數(shù)字信號處理
英文描述： 16-Bit Digital Signal Processor
中文描述： 16位數(shù)字信號處理器
文件頁數(shù)： 44/66頁
文件大小： 803K
代理商： TMS320C242FNA
TMS320C242
DSP CONTROLLER
SPRS063B – DECEMBER 1997 – REVISED DECEMBER 1999
44
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current I
IK
(V
I
< 0 or V
I
> V
DD
)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current I
OK
(V
O
< 0 or V
O
> V
DD
)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: A version(’C242)
S version(’C242)
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltage values are with respect to VSS.
recommended operating conditions
§
–0.3 V to 7 V
–0.3 V to 7 V
–0.3 V to 7 V
±
20 mA
±
20 mA
–40
°
C to 85
°
C
–40
°
C to 125
°
C
–55
°
C to 150
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
MIN
NOM
MAX
UNIT
VDD
VSS
Supply voltage
4.5
5
5.5
V
Supply ground
0
V
XTAL1/CLKIN
3
VDD + 0.3
VDD + 0.3
+ 0 3
VIH
High level input voltage
High-level input voltage
V
All other inputs
2
XTAL1/CLKIN
0 3
–0.3
0 7
0.7
VIL
Low level input voltage
Low-level input voltage
V
All other inputs
–0.3
0.7
IOH
IOL
High-level output current VOH= 2 4 V
High-level output current, VOH = 2.4 V
Low-level output current VOL= 0 7 V
Low-level output current, VOL = 0.7 V
All outputs
–8
mA
All outputs
A version
8
mA
TA
Operating free air temperature
Operating free-air temperature
–40
85
°
C
S version
–40
125
§Thermal resistance values,
Θ
JA (junction-to-ambient) and
Θ
JC (junction-to-case) for the ’C242 can be found on the mechanical package pages.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOH
High-level output voltage
5-V operation, IOH = MAX = 8 mA
2.4
V
VOL
Low-level output voltage
5-V operation, IOL = MAX = 8 mA
TRST pins with internal pulldown
0.7
V
350
II
Input current (VI = VSS or VDD)
EMU0, EMU1, TMS, TCK, and TDI
with internal pullup (NMI, XF, BIO)
–350
65
μ
A
All other input-only pins
–5
5
IOZ
Output current, high-impedance state
(off-state)
VO = VDD or 0 V
–5
1
5
μ
A
Supply current, operating mode
5-V operation, tc(CO) = 50 ns
5-V operation, tc(CO) = 50 ns
5-V operation, tc(CO) = 50 ns
100
mA
Supply current, Idle 1 low-power mode
LPM0
40
mA
IDD#
Supply current, Idle 2 low-power mode
LPM1
35
Supply current, PLL/OSC power-down
mode
LPM2
5-V operation, at room temperature
75
μ
A
Ci
Co
These three pins are pulled high only on the ’C242, not on emulation devices such as ’F243/’F241.
#In operating mode, the CPU is running a dummy code in B0 program memory. In all IDLE modes, the CPU is idle in B0 program memory.
Input capacitance
15
pF
Output capacitance
15
pF
A
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