參數(shù)資料
型號： TMS320FAMILY
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)： 22/132頁
文件大小： 1707K
代理商： TMS320FAMILY
SPRS145G
–
JULY 2000
–
REVISED FEBRUARY 2002
22
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251
–
1443
pin functions (continued)
Table 2. LF240xA and LC240xA Pin List and Package Options
(Continued)
PIN NAME
LF2407A
(144-PGE)
2406A
(100-PZ)
LC2404A
(100-PZ)
2403A,
LC2402A
(64-PAG)
and
2402A
(64-PG)
DESCRIPTION
ADDRESS, DATA, AND MEMORY CONTROL SIGNALS (CONTINUED)
ENA_144
122
Active high to enable external interface signals. If pulled low, the
2407A behaves like the 2406A/2403A/2402A
—
i.e., it has no
external memory and generates an illegal address if DS is
asserted. This pin has an internal pulldown.
(
↓
)
VIS_OE
97
Visibility output enable (active when data bus is output). This pin
is active (low) whenever the external data bus is driving as an
output during visibility mode. Can be used by external decode
logic to prevent data bus contention while running in visibility
mode.
A0
80
Bit 0 of the 16-bit address bus
A1
78
Bit 1 of the 16-bit address bus
A2
74
Bit 2 of the 16-bit address bus
A3
71
Bit 3 of the 16-bit address bus
A4
68
Bit 4 of the 16-bit address bus
A5
64
Bit 5 of the 16-bit address bus
A6
61
Bit 6 of the 16-bit address bus
A7
57
Bit 7 of the 16-bit address bus
A8
53
Bit 8 of the 16-bit address bus
A9
51
Bit 9 of the 16-bit address bus
A10
48
Bit 10 of the 16-bit address bus
A11
45
Bit 11 of the 16-bit address bus
A12
43
Bit 12 of the 16-bit address bus
A13
39
Bit 13 of the 16-bit address bus
A14
34
Bit 14 of the 16-bit address bus
A15
31
Bit 15 of the 16-bit address bus
D0
127
Bit 0 of 16-bit data bus
(
↑
)
(
↑
)
(
↑
)
(
↑
)
(
↑
)
(
↑
)
D1
130
Bit 1 of 16-bit data bus
D2
132
Bit 2 of 16-bit data bus
D3
134
Bit 3 of 16-bit data bus
D4
136
Bit 4 of 16-bit data bus
D5
Bold, italicized pin names
indicate pin function after reset.
GPIO
–
General-purpose input/output pin. All GPIOs come up as input after reset.
§
It is highly recommended that VCCA be isolated from the digital supply voltage (and VSSA from digital ground) to maintain the specified accuracy
and improve the noise immunity of the ADC.
Only when all of the following conditions are met: EMU1/OFF is low, TRST is low, and EMU0 is high
#No power supply pin (VDD, VDDO, VSS, or VSSO) should be left unconnected. All power supply pins must be connected appropriately for proper
device operation.
LEGEND:
↑
–
Internal pullup
↓
–
Internal pulldown
(Typical active pullup/pulldown value is
±
16
μ
A.)
138
Bit 5 of 16-bit data bus
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