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參數(shù)資料
| 型號(hào)： | 24LC41A |
| 英文描述： | High-Speed Secure Microcontroller |
| 中文描述： | 24LC41A數(shù)據(jù)表 |
| 文件頁數(shù)： | 5/18頁 |
| 文件大?。?/td> | 244K |
| 代理商： | 24LC41A |
2003 Microchip Technology Inc.
DS21176D-page 5
24LC41A
2.1.3
BIDIRECTIONAL MODE
Before the 24LC41A can be switched into the Bidirec-
tional mode (Figure 2-4), it must enter the transition
mode, which is done by applying a valid high-to-low
transition on the Bidirectional mode Clock (DSCL). As
soon it enters the transition mode, it looks for a control
byte 1010 000X on the I
2
C bus, and starts to count
pulses on VCLK. Any high-to-low transition on the
DSCL line will reset the count. If it sees a pulse count
of 128 on VCLK while the DSCL line is idle, it will revert
back to the Transmit-only mode, and transmit its
contents starting with the Most Significant bit in
address 00h. However, if it detects the control byte on
the I
2
C bus, (Figure 2-3) it will switch to the in the
Bidirectional mode. Once the device has made the
transition to the Bidirectional mode, the only way to
switch the device back to the Transmit-only mode is to
remove power from the device. The mode transition
process is shown in detail in Figure 2-4.
Once the device has switched into the Bidirectional
mode, the VCLK input is disregarded, with the excep-
tion that a logic high level is required to enable write
capability. This mode supports a two-wire bidirectional
data transmission protocol (I
2
C
)
. In this protocol, a
device that sends data on the bus is defined to be the
transmitter, and a device that receives data from the
bus is defined to be the receiver. The bus must be
controlled by a master device that generates the
Bidirectional mode Clock (DSCL), controls access to
the bus and generates the Start and Stop conditions,
while the monitor port acts as the slave. Both master
and slave can operate as transmitter or receiver, but
the master device determines which mode is activated.
In the Bidirectional mode, the monitor port only
responds to commands for device 1010 000X.
2.2
Microcontroller Access Port
The Microcontroller Access Port supports a bidirec-
tional 2-wire bus and data transmission protocol. A
device that sends data onto the bus is defined as
transmitter, and a device receiving data as receiver.
The bus has to be controlled by a master device which
generates the serial clock (MSCL), controls the bus
access, and generates the Start and Stop conditions,
while the Microcontroller Access Port works as slave.
Both master and slave can operate as transmitter or
receiver, but the master device determines which mode
is activated.
FIGURE 2-3:
SUCCESSFUL MODE TRANSITION TO BIDIRECTIONAL MODE
FIGURE 2-4:
MODE TRANSITION WITH RECOVERY TO TRANSMIT-ONLY MODE
Transition mode with possibility to return to Transmit-only mode
Bidirectional
permanently
SCL
SDA
VCLK count = 1 2 n 0
VCLK
Transmit-only
mode
MODE
S
1
0
1
0
0
0
0
0
ACK
n < 128
TVHZ
SCL
SDA
VCLK
Transmit-only
MODE
Bidirectional
Recovery to Transmit-only mode
Bit8
(MSB of data in 00h)
VCLK count = 1 2 3 4 127 128
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PDF描述 |
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| 24LC41A | 1K/4K 2.5V Dual Mode, Dual Port IIC Serial EEPROM(1K/4K位,雙模式雙端口，EEPROM) |
| 24LC41IP | 1K/4K 2.5V Dual Mode, Dual Port I2C⑩ Serial EEPROM |
| 24LC41P | 1K/4K 2.5V Dual Mode, Dual Port I2C⑩ Serial EEPROM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 24LC512/S16K | 制造商:Microchip Technology Inc 功能描述:512K, 64K X 8, 2.5V SER EE,IND - Gel-pak, waffle pack, wafer, diced wafer on film |
| 24LC512/W16K | 制造商:Microchip Technology Inc 功能描述:512K, 64K X 8, 2.5V SER EE,IND,WAFER - Gel-pak, waffle pack, wafer, diced wafer on film |
| 24LC512/WF16K | 制造商:Microchip Technology Inc 功能描述:512K, 64K X 8, 2.5V SER EE,IND - Gel-pak, waffle pack, wafer, diced wafer on film |
| 24LC512-E/MF | 功能描述:電可擦除可編程只讀存儲(chǔ)器 64kx8 - 2.5V RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)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 |
| 24LC512-E/MS | 制造商:Microchip Technology Inc 功能描述:512K, 64K X 8, 2.5V SER EE, EXT - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC EEPROM 512KBIT 400KHZ 8MSOP 制造商:Microchip Technology Inc 功能描述:512K, 64K X 8, 2.5V SER EE, EXT, 8 MSOP 3x3mm TUBE |
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