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參數(shù)資料
| 型號： | M41ST85YSH |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Shielded Multiconductor Cable; Number of Conductors:4; Conductor Size AWG:22; No. Strands x Strand Size:19 x 34; Jacket Material:Polyvinylchloride (PVC); Leaded Process Compatible:Yes; Temperature Max:105 C; Voltage Nom.:300V RoHS Compliant: Yes |
| 中文描述： | 5.0或3.0V，512位64 × 8串行時(shí)鐘和NVRAM督導(dǎo)員 |
| 文件頁數(shù)： | 13/33頁 |
| 文件大小： | 464K |
| 代理商： | M41ST85YSH |
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M41ST85Y, M41ST85W
READ Mode
In this mode the master reads the M41ST85Y/W
slave after setting the slave address (see Figure
13, page 13). Following the WRITE Mode Control
Bit (R/W=0) and the Acknowledge Bit, the word
address 'An' is written to the on-chip address
pointer. Next the START condition and slave ad-
dress are repeated followed by the READ Mode
Control Bit (R/W=1). At this point the master trans-
mitter becomes the master receiver.
The data byte which was addressed will be trans-
mitted and the master receiver will send an Ac-
knowledge Bit to the slave transmitter. The
address pointer is only incremented on reception
of an Acknowledge Clock. The M41ST85Y/W
slave transmitter will now place the data byte at
address An+1 on the bus, the master receiver
reads and acknowledges the new byte and the ad-
dress pointer is incremented to An+2.
This cycle of reading consecutive addresses will
continue until the master receiver sends a STOP
condition to the slave transmitter (see Figure 14,
page 13).
The system-to-user transfer of clock data will be
halted whenever the address being read is a clock
address (00h to 07h). The update will resume ei-
ther due to a Stop Condition or when the pointer
increments to a non-clock or RAM address.
Note:
This is true both in READ Mode and WRITE
Mode.
An alternate READ Mode may also be implement-
ed whereby the master reads the M41ST85Y/W
slave without first writing to the (volatile) address
pointer. The first address that is read is the last
one stored in the pointer (see Figure 15, page 14).
Figure 13. Slave Address Location
Figure 14. READ Mode Sequence
AI00602
R/W
SLAVE ADDRESS
START
A
0
1
0
0
0
1
1
M
L
AI00899
BUS ACTIVITY:
A
S
A
A
A
N
S
S
P
SDA LINE
BUS ACTIVITY:
MASTER
R
DATA n
DATA n+1
DATA n+X
WORD
ADDRESS (An)
SLAVE
ADDRESS
S
S
R
SLAVE
ADDRESS
A
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| M41ST85WMH | 5.0 OR 3.0V, 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR |
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| M41ST87W | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection |
| M41ST87W_11 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM |
| M41ST87WMX6 | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 1280 (160x8) 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 |
| M41ST87WMX6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM |
| M41ST87WMX6TR | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 1280 (160x8) 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 |
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