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參數(shù)資料
| 型號： | ISL12024IRTCZ |
| 廠商： | Intersil |
| 文件頁數(shù)： | 10/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC/CALENDER 64BIT 8-TDFN |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 類型： | 時鐘/日歷 |
| 特點(diǎn)： | 警報(bào)器，閏年，唯一 ID |
| 時間格式： | HH:MM:SS（12/24 小時） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 電壓 - 電源，電池： | 1.8 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TDFN |
| 供應(yīng)商設(shè)備封裝： | 8-TDFN（3x3） |
| 包裝： | 管件 |
18
FN6749.1
December 15, 2011
Acknowledge Polling
Disabling of the inputs during non-volatile write cycles can
be used to take advantage of the 12ms (typ) write cycle time.
Once the stop condition is issued to indicate the end of the
master’s byte load operation, the ISL12024IRTCZ initiates
the internal non-volatile write cycle. Acknowledge polling can
begin immediately. To do this, the master issues a start
condition followed by the Memory Array Slave Address Byte
for a write or read operation (AEh or AFh). If the
ISL12024IRTCZ is still busy with the non-volatile write cycle
then no ACK will be returned. When the ISL12024IRTCZ has
completed the write operation, an ACK is returned and the
host can proceed with the read or write operation. See the
flow chart in Figure 20. Note: Do not use the CCR Slave byte
(DEh or DFh) for Acknowledge Polling.
Read Operations
There are three basic read operations: Current Address
Read, Random Read and Sequential Read.
CURRENT ADDRESS READ
Internally the ISL12024IRTCZ contains an address counter
that maintains the address of the last word read incremented
by one. Therefore, if the last read was to address n, the next
read operation would access data from address n + 1. On
power-up, the 16-bit address is initialized to 00h. In this way,
a current address read immediately after the power-on reset
can download the entire contents of memory starting at the
first location. Upon receipt of the Slave Address Byte with
the R/W bit set to one, the ISL12024IRTCZ issues an
acknowledge, then transmits 8 data bits. The master
terminates the read operation by not responding with an
acknowledge during the ninth clock and issuing a stop
condition. See Figure 19 for the address, acknowledge, and
data transfer sequence.
ADDRESS
10
6 BYTES
15
6 BYTES
ADDRESS = 5
ADDRESS POINTER ENDS
FIGURE 17. WRITING 12 BYTES TO A 16-BYTE MEMORY PAGE STARTING AT ADDRESS 10
AT ADDR = 5
WORD
ADDRESS 0
S
T
A
R
T
S
T
O
P
SLAVE
ADDRESS
WORD
ADDRESS 1
DATA
(n)
A
C
K
A
C
K
A
C
K
SDA BUS
SIGNALS FROM
THE SLAVE
SIGNALS FROM
THE MASTER
0
DATA
(1)
A
C
K
1
≤ n ≤ 16 for EEPROM array
1
≤ n ≤ 8 for CCR
1
000 0 0 0 0
FIGURE 18. PAGE WRITE SEQUENCE
S
T
A
R
T
S
T
O
P
SLAVE
ADDRESS
DATA
A
C
K
SDA BUS
SIGNALS FROM
THE SLAVE
SIGNALS FROM
THE MASTER
1
FIGURE 19. CURRENT ADDRESS READ SEQUENCE
ISL12024IRTC
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|---|---|
| ISL12024IRTCZ-T | 功能描述:實(shí)時時鐘 RTC OUTPUT PROGRAM TO 32KHZ W/EEPROM 8 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 |
| ISL12024IVZ | 功能描述:實(shí)時時鐘 REAL TIME CLK/CLNDR W/EEPROM IN 8LD 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 |
| ISL12024IVZ-T | 功能描述:實(shí)時時鐘 REAL TIME CLK/CLNDR W/EEPROM IN 8LD 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 |
| ISL12025 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Real-Time Clock/Calendar with EEPROM |
| ISL12025IBZ | 功能描述:實(shí)時時鐘 REAL TIME CLK/CLNDR W/EEPROM 2 63VSET 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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