- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371399 > 24LC61-IP (Microchip Technology Inc.) 1K/2K Software Addressable I 2 C ⑩ Serial EEPROM PDF資料下載
參數(shù)資料
| 型號： | 24LC61-IP |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 1K/2K Software Addressable I 2 C ⑩ Serial EEPROM |
| 中文描述： | 1K/2K軟件尋址的I 2 C⑩串行EEPROM |
| 文件頁數(shù)： | 10/16頁 |
| 文件大小： | 426K |
| 代理商： | 24LC61-IP |
24LCS61/62
DS21226A-page 10
Preliminary
1997 Microchip Technology Inc.
6.0
WRITE OPERATIONS
6.1
Byte Write
Following the start signal from the master, the control
byte for a write command is sent by the master trans-
mitter. The device will acknowledge this control byte
during the ninth clock pulse. The next byte transmitted
by the master is the ID byte for the device. After receiv-
ing another acknowledge signal from the 24LCS61/62,
the master device will transmit the address and then
the data word to be written into the addressed memory
location. The 24LCS61/62 acknowledges between
each byte, and the master then generates a stop con-
dition. This initiates the internal write cycle, and during
this time the 24LCS61/62 will not generate acknowl-
edge signals (Figure 6-1).
6.2
Page Write
The control byte, ID byte, word address, and the first
data byte are transmitted to the 24LCS61/62 in the
same way as in a byte write. But, instead of generating
a stop condition, the master transmits up to 15 addi-
tional data bytes to the 24LCS61/62, which are tempo-
rarily stored in the on-chip page buffer and will be
written into the memory after the master has transmit-
ted a stop condition. If the master should transmit more
than 16 bytes prior to generating the stop condition, the
address counter will roll over and the previously
received data will be overwritten. As with the byte write
operation, once the stop condition is received an inter-
nal write cycle will begin (Figure 6-2) and the 24LCS61/
62 will not generate acknowledge.
6.3
Low Voltage Write Protection
The 24LCS61/62 employs a V
CC
threshold detector cir-
cuit which disables the internal erase/write logic, if the
V
CC
is below 1.5 volts at nominal conditions.
6.4
Set Write Protection Command
The Set Write Protection command allows the user to
write protect a portion of the array. For the 24LCS61
this command will write protect the entire array. For the
24LCS62 this command will protect the lower half of
the array. This command is illustrated in Figure 6-3.
This is a one time only command and cannot be
reversed once the protection fuse has been set.
Once the Write protect feature has been set, the device
will no longer acknowledge the control byte (or any of
the other bytes) of this command. The STOP bit of this
command initiates an internal write cycle, and during
this time the 24LCS61/62 will not generate acknowl-
edge signals.
FIGURE 6-1:
BYTE WRITE
FIGURE 6-2:
PAGE WRITE
S
T
A
R
T
FIGURE 6-3:
SET WRITE PROTECTION COMMAND
S
T
A
R
T
O
E
S
T
A
R
T
S
T
O
P
DEVICE
ID BYTE
DATA
CONTROL
BYTE
A
C
K
A
C
K
A
C
K
BUS ACTIVITY
MASTER
SDA LINE
BUS ACTIVITY
A
C
K
ADDRESS
BYTE
1
0
1 0E
S
OE Bit = EDS Pin Output Enable; see Section 9.0
S
T
O
P
CONTROL
BYTE
A
C
K
A
C
K
A
C
K
BUS ACTIVITY
MASTER
SDA LINE
BUS ACTIVITY
A
C
K
ADDRESS
BYTE
DATA BYTE
0
A
C
K
DATA BYTE
15
DEVICE
ID BYTE
1
0
1 0
0 1 0
S
O
E
S
CONTROL
BYTE
A
C
K
1
0
1 0
A
C
K
0
0 0
P
S
T
O
P
A
C
K
X X X X X X X X
A
C
K
X X X X X X X X
DEVICE
ID BYTE
ADDRESS
BYTE
DATA BYTE
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 24LCS61 | 1K/2K Software Addressable I 2 C ⑩ Serial EEPROM |
| 24LCS62 | 1K/2K Software Addressable I 2 C ⑩ Serial EEPROM |
| 24LC62-SN | BOX SHIELD W/CVR 2.25X1.38X1.13,1 |
| 24LC62-ST | 1K/2K Software Addressable I 2 C ⑩ Serial EEPROM |
| 24LC61-ISN | 1K/2K Software Addressable I 2 C ⑩ Serial EEPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 24LC64-/SN | 制造商:Microchip Technology Inc 功能描述: |
| 24LC64-E/MNY | 功能描述:電可擦除可編程只讀存儲器 64K 8K X 8 2.5V SER EE EXT RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 24LC64-E/MS | 功能描述:電可擦除可編程只讀存儲器 8kx8 - 2.5V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 24LC64-E/P | 功能描述:電可擦除可編程只讀存儲器 8kx8 - 2.5V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 24LC64-E/SM | 功能描述:電可擦除可編程只讀存儲器 8kx8 - 2.5V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。