- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄382381 > PCF2042V EEPROM PDF資料下載
參數(shù)資料
| 型號(hào)： | PCF2042V |
| 元件分類(lèi)： | DRAM |
| 英文描述： | EEPROM |
| 中文描述： | EEPROM的 |
| 文件頁(yè)數(shù)： | 12/22頁(yè) |
| 文件大小： | 264K |
| 代理商： | PCF2042V |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)當(dāng)前第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)
1997 Feb 03
12
Philips Semiconductors
Product Specification
Memory card IC
PCF2042 V2
5.4.5
U
PDATE
/W
RITE
C
OMMANDS
The EEPROM programming is defined as:
Erase:
change EEPROM byte from 0xXX to 0xFF
Write:
change EEPROM bits from HIGH to LOW (no
changes from LOW to HIGH)
All other data changes require a complete Erase- and
Write-cycle.
If the data byte transmitted equals the current content of
the addressed EEPROM byte, neither the Erase- nor the
Write-cycle will be executed.
The Erase-cycle as well as the Write-cycle takes 2.5 ms
each.
Before any data can be programmed at least one of the
read commands or Answer-to-Reset must be given.
5.4.6
U
PDATE
M
AIN
M
EMORY
The UPDATE MAIN MEMORY command programs the
EEPROM cell addressed by ‘byte Address’ with the Data
byte transmitted.
The write attempt fails, if the addressed byte has been
protected by the appropriate Protection bit.
5.4.7
W
RITE
P
ROTECTION
M
EMORY
The WRITE PROTECTION MEMORY command
programs the EEPROM protection bit addressed by ‘byte
Address’, only if the Data byte transmitted equals the data
content of the EEPROM byte to be protected. If the
transmitted data byte does not match, the Protection bit
will not be set.
If the transmitted address is greater than 0x1F, the
command is ignored.
5.4.8
U
PDATE
S
ECURITY
M
EMORY
The UPDATE SECURITY MEMORY command programs
the EEPROM cell addressed by ‘byte Address’ with the
data byte transmitted.
If the transmitted address is greater than 0x03, the
command is ignored.
6
RESET MODES
6.1
Reset
If RST is set to HIGH for at least 5
μ
s and if the IFD keeps
CLK in low state during the reset pulse, the IC aborts any
operation, sets the I/O line to HIGH and is then ready for
further operations.
6.2
Answer-To-Reset
The Answer-to-reset is initiated according to ISO standard
7816-3. The four data bytes of the ATR are serially output
to I/O with LSB first when 32 clock pulses are applied to
CLK. The I/O is set to HIGH after an additional clock pulse
(see Fig.3 and Chapter 5).
6.3
Power on Reset
After applying the operating voltage VCC, the I/O goes to
HIGH. Before any data can be programmed at least one of
the read commands or Answer-to-Reset must be given.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCF2103 | LCD controllers/drivers |
| PCF2103EU | LCD controllers/drivers |
| PCF2104L | LCD controller/driver |
| PCF2104LU | LCD controller/driver |
| PCF2104N | LCD controller/driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCF-2-1/2 | 制造商:Cooper Bussmann 功能描述:FUSE 2.5A 250V NON-TIME DLY ACTING 2PIN - Bulk 制造商:Cooper Bussmann 功能描述:Fuse Subminiature 2.5A 250V Non-Time Delay 2-Pin Radial Through Hole |
| PCF2-1/2 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Fuse |
| PCF-2-1/2-R | 功能描述:保險(xiǎn)絲 PC TRON - ROHS RoHS:否 制造商:Littelfuse 產(chǎn)品:Surface Mount Fuses 電流額定值:0.5 A 電壓額定值:600 V 保險(xiǎn)絲類(lèi)型:Fast Acting 保險(xiǎn)絲大小/組:Nano 尺寸:12.1 mm L x 4.5 mm W 安裝風(fēng)格: 端接類(lèi)型:SMD/SMT 系列:485 |
| PCF2100 | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:LCD drivers |
| PCF2100C | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:LCD drivers |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。