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參數(shù)資料
| 型號(hào)： | 24AA164TSN |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 16K 1.8V Cascadable I2CTM Serial EEPROM |
| 中文描述： | 16K的1.8級(jí)聯(lián)I2CTM串行EEPROM |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大小： | 124K |
| 代理商： | 24AA164TSN |
24AA164
DS21100F-page 6
1999 Microchip Technology Inc.
FIGURE 4-1:
BYTE WRITE
FIGURE 4-2:
PAGE WRITE
S
T
A
R
T
S
T
O
P
SDA LINE
P
DATA
S
T
A
R
T
CONTROL
BYTE
S
WORD
ADDRESS
BUS ACTIVITY:
MASTER
BUS ACTIVITY:
A
C
K
A
C
K
A
C
K
1 A2
B0
A1 A0 B2 B1
S
T
O
P
SDA LINE
P
DATA n
CONTROL
BYTE
WORD
ADDRESS (n)
BUS ACTIVITY:
MASTER
BUS ACTIVITY:
A
C
K
A
C
K
A
C
K
DATA n + 1
A
C
K
DATA n + 15
A
C
K
S
A2
B0
A1 A0 B2 B1
5.0
ACKNOWLEDGE POLLING
Since the device will not acknowledge during a write
cycle, this can be used to determine when the cycle is
complete (this feature can be used to maximize bus
throughput). Once the stop condition for a write com-
mand has been issued from the master, the device ini-
tiates the internally timed write cycle. ACK polling can
be initiated immediately. This involves the master
sending a start condition followed by the control byte for
a write command (R/W = 0). If the device is still busy
with the write cycle, then no ACK will be returned. If the
cycle is complete, then the device will return the ACK
and the master can then proceed with the next read or
write command. See Figure 5-1 for flow diagram.
FIGURE 5-1:
ACKNOWLEDGE POLLING
FLOW
6.0
WRITE PROTECTION
The 24AA164 can be used as a serial ROM when the
WP pin is connected to V
CC
. Programming will be
inhibited and the entire memory will be write-protected.
Send
Write Command
Send Stop
Condition to
Initiate Write Cycle
Send Start
Send Control Byte
with R/W = 0
Did Device
Acknowledge
(ACK = 0)
Next
Operation
NO
YES
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| 24AA16-E/MC | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:16K I2C? Serial EEPROM |
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