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| 型號(hào)： | PSD413A2F |
| 英文描述： | Field Programmable Microcontroller Peripherals with Flash Memory(可編程邏輯，16K位SRAM,35個(gè)可編程I/O,通用PLD有59個(gè)輸入) |
| 中文描述： | 現(xiàn)場可編程微控制器外圍設(shè)備與快閃記憶體（可編程邏輯，16K的位的SRAM，35余個(gè)可編程輸入/輸出，通用PLD的有59個(gè)輸入） |
| 文件頁數(shù)： | 85/98頁 |
| 文件大?。?/td> | 365K |
| 代理商： | PSD413A2F |
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PSD413F Family
6-85
ADVANCE INFORMATION
Modes of
Operation
Read Mode
The Flash memory has two control functions which must be satisfied in order to obtain
data at the outputs. CSF is the power control and should be used for device selection.
RDF is the output control and should be used to gate data to the output pins if the device is
selected.
Standby Mode
A standby mode is achieved with CSF held at V
IH
. Under this condition, the current is
typically reduced to standby current.
Write
Device erasure and programming are accomplished via the command register. The
contents of the register serve as inputs to the internal state machine. The state machine
outputs dictate the function of the device.
The command register itself does not occupy any addressable memory location. The
register is a latch used to store the commands, along with the address and data information
needed to execute the command. The command register is written by bringing WRF to V
IL
,
while CSF is at V
IL
and RDF is at V
IH
. Addresses are latched on the falling edge of WRF or
CSF, whichever happens later; while data is latched on the rising edge of the WRF or CSF,
whichever happens first. Standard microprocessor write timings are used.
Sector Protection
The Flash memory features hardware sector protection. This feature will disable both
program and erase operations in any combination of eight sectors of memory. The sector
protect feature is enabled using programming equipment at the user’s site. The device is
shipped with all sectors unprotected.
It is possible to determine if a sector is protected in the system by writing an Autoselect
command. Performing a read operation at the address location XX02H, where the higher
order address bits A14, A15F, and A16F is the desired sector address, will produce a logical
“1” at DQ0 for a protected sector. See Table 1 for Autoselect codes.
Type
A14,
A1
A0
Code DQ7
(HEX)
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
A15F, A16F
Sector
Protection
Sector
Address
V
IH
V
IL
01H
*
0
0
0
0
0
0
0
1
Table 1. Flash Memory Sector Protection Verify Autoselect Codes
A16F
A15F
A14
Address Range
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA7
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
00000h-03FFFh
04000h-07FFFh
08000h-0BFFFh
0C000h-0FFFFh
10000h-13FFFh
14000h-17FFFh
18000h-1BFFFh
1C000h-1FFFFh
Table 2. Sector Address Table
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PSD4-16 | 制造商:Tamura Corporation of America 功能描述: |
| PSD4-20 | 制造商:MICROTRAN 功能描述:POWER TRANSFORMER, 6 VA |
| PSD4235G2-70U | 功能描述:SPLD - 簡單可編程邏輯器件 5.0V 4M 70ns RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池?cái)?shù)量:10 最大工作頻率:66 MHz 延遲時(shí)間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:DIP-24 |
| PSD4235G2-90U | 功能描述:CPLD - 復(fù)雜可編程邏輯器件 5.0V 4M 90ns RoHS:否 制造商:Lattice 系列: 存儲(chǔ)類型:EEPROM 大電池?cái)?shù)量:128 最大工作頻率:333 MHz 延遲時(shí)間:2.7 ns 可編程輸入/輸出端數(shù)量:64 工作電源電壓:3.3 V 最大工作溫度:+ 90 C 最小工作溫度:0 C 封裝 / 箱體:TQFP-100 |
| PSD4235G2-90UI | 功能描述:CPLD - 復(fù)雜可編程邏輯器件 5.0V 4M 90ns RoHS:否 制造商:Lattice 系列: 存儲(chǔ)類型:EEPROM 大電池?cái)?shù)量:128 最大工作頻率:333 MHz 延遲時(shí)間:2.7 ns 可編程輸入/輸出端數(shù)量:64 工作電源電壓:3.3 V 最大工作溫度:+ 90 C 最小工作溫度:0 C 封裝 / 箱體:TQFP-100 |
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