參數(shù)資料
型號(hào): TMS320LC17
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號(hào)處理
英文描述: Digital Signal Processors(278ns指令周期,分離的程序和數(shù)據(jù)總線,外部輪詢中斷的DSP)
中文描述: 數(shù)字信號(hào)處理器(278ns指令周期,分離的程序和數(shù)據(jù)總線,外部輪詢中斷的數(shù)字信號(hào)處理器)
文件頁數(shù): 49/139頁
文件大小: 1478K
代理商: TMS320LC17
TMS320E14, TMS320P14
DIGITAL SIGNAL PROCESSORS
SPRS009C–JANUARY 1987–REVISED JULY 1991
POST OFFICE BOX 1443
HOUSTON, TEXAS 77001
49
TERMINAL FUNCTIONS (TMS320E14/P14)
NAME
I/O
DEFINITION
A12(MSB)-A0(LSB)
CLKIN
E
EPT
G
GND
PGM
Q8(MSB)-Q1(LSB)
RS
VCC
VPP
I
I
I
I
I
I
I
I/O
I
I
I
On-chip EPROM programming address lines
Clock oscillator input
EPROM chip enable
EPROM test mode select
EPROM output enable
Ground
EPROM write/program select
Data lines for byte-wide programming of on-chip 8K bytes of EPROM
Reset for initializing the device
5-V to 6.5-V power supply
12.5-V to 13-V power supply
Table 4 shows the programming levels required for programming, verifying, reading, and protecting the EPROM
cell.
Table 4. TMS320E14/P14 Programming Mode Levels
SIGNAL
NAME
TMS320E14/P14
PIN
TMS27C64
PIN
PROGRAM
PROGRAM
VERIFY
READ
EPROM
PROTECT
PROTECT
VERIFY
E
19
20
VIL
VIH
PULSE
VIL
VIL
VIH
VIH
VIH
VPP
VCCP
VSS
VSS
VPP
VIL
VIL
VIH
VCCP
VCCP
VSS
VSS
VPP
G
23
22
PULSE
PULSE
PGM
16
27
VIH
VPP
VCCP
VSS
VSS
VSS
VIH
VCC
VCC
VSS
VSS
VSS
VPP
VCC
VSS
CLKIN
18
1
VPP
VCCP
VSS
VSS
VSS
4,33
28
3,34
14
24
14
EPT
17
26
Q1-Q8
42, 41, 38, 37,
32-29
11–13, 15-19,
Data In
Data Out
Data Out
Q8 = PULSE
Q8 = RBIT
A12-A7
15, 11, 10, 8, 7, 2
2, 23, 21, 24,
25, 3
ADDR
ADDR
ADDR
X
X
A6
1
4
ADDR
ADDR
ADDR
X
VIL
X
A5
68
5
ADDR
ADDR
ADDR
X
A4
67
6
ADDR
ADDR
ADDR
VIH
X
X
A3-A0
66, 65, 56, 55
7-10
ADDR
ADDR
ADDR
X
Signal names shown for
E14/P14 EPROM programming mode only.
Legend:
VIH
= TTL high level; VIL = TTL low level; ADDR = byte address bit; VPP = 12.5 V
±
0.25 V (FAST) or 13 V
±
0.25 V (SNAP! Pulse).
VCC
=
5 V
±
0.25 V; X = don’t care; PULSE = low-going TTL pulse.
DIN
= byte to be programmed at ADDR; QOUT = byte stored at ADDR.; RBIT = ROM protect bit
VCCP= 6 V
±
0.25 V (FAST) or 6.5 V
±
0.25 V (SNAP! Pulse).
programming
Since every memory in the cell is at a logic high, the programming operation reprograms selected bits to low.
Once the
320E14 is programmed, these bits can only be erased using ultraviolet light. The correct byte is placed
on the data bus with V
PP
set to the 12.5-V level. The PGM pin is then pulsed low to program in the zeros.
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