參數(shù)資料
型號(hào)： MCP79410-I/ST
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： REAL TIME CLOCK, PDSO8
封裝： 4.40 MM BODY, ROHS COMPLAINT, PLASTIC, TSSOP-8
文件頁數(shù)： 14/40頁
文件大小： 584K
代理商： MCP79410-I/ST
2010-2011 Microchip Technology Inc.
DS22266C-page 21
MCP7941X
5.2.4.3
Sequential Read
Sequential reads are initiated in the same way as a
random read except that after the MCP7941X transmits
the first data byte, the master issues an Acknowledge
as opposed to the Stop condition used in a random
read. This Acknowledge directs the MCP7941X to
transmit the next sequentially addressed 8-bit word
(Figure 5-3). Following the final byte transmitted to the
master, the master will NOT generate an Acknowledge
but will generate a Stop condition. To provide
sequential reads, the MCP7941X contains an internal
Address Pointer which is incremented by one at the
completion of each operation. This Address Pointer
allows the entire memory contents to be serially read
during one operation. The internal Address Pointer will
automatically roll over to the start of the Block.
FIGURE 5-2:
RANDOM READ (EEPROM SHOWN)
FIGURE 5-3:
SEQUENTIAL READ (EEPROM SHOWN)
5.3
Unique ID
The MCP7941X features an additional 64-bit unique ID
area. This is separate and in addition to the 1K of on-
board EEPROM.
The unique ID is located at addresses 0xF0 through
0xF7. Reading the unique ID requires the user to
simply address these bytes.
The unique ID area is protected to prevent unintended
writes to these locations. The unlock sequence is
The unique ID can be factory programmed on some
devices to provide a unique IEEE EUI-48 or EUI-64
value. In addition, customer-provided codes can also
be programmed. Please contact your Microchip sales
channel for more information.
BUS ACTIVITY
MASTER
SDA LINE
BUS ACTIVITY
A
C
K
N
O
A
C
K
A
C
K
A
C
K
S
T
O
P
S
T
A
R
T
CONTROL
BYTE
ADDRESS
BYTE
CONTROL
BYTE
DATA
BYTE
S
T
A
R
T
S 1 010
0
111
S 10 10
1
P
BUS ACTIVITY
MASTER
SDA LINE
BUS ACTIVITY
CONTROL
BYTE
DATA n
DATA n + 1
DATA n + 2
DATA n + X
N
O
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
S
T
O
P
相關(guān)PDF資料
PDF描述
MCP79411-I/MS REAL TIME CLOCK, PDSO8
MCP79410T-I/MNY REAL TIME CLOCK, PDSO8
MCP79410T-I/MS REAL TIME CLOCK, PDSO8
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MCP79410-I/MNY REAL TIME CLOCK, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP79410T-I/MNY 功能描述:實(shí)時(shí)時(shí)鐘 I2C GP RTCC 1Kb EE 64B SRAM ID RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
MCP79410T-I/MS 功能描述:實(shí)時(shí)時(shí)鐘 I2C GP RTCC 1Kb EE 64B SRAM ID RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
MCP79410T-I/SN 功能描述:實(shí)時(shí)時(shí)鐘 I2C GP RTCC 1Kb EE 64B SRAM ID RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
MCP79410T-I/ST 功能描述:實(shí)時(shí)時(shí)鐘 I2C GP RTCC 1Kb EE 64B SRAM ID RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
MCP79411 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:I2C? Real-Time Clock/Calendar with EEPROM, SRAM, Unique ID and Battery Switchover
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