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參數(shù)資料
| 型號： | DS32C35-33#T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 13/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC ACCURATE I2C 3.3V 20-SOIC |
| 產(chǎn)品變化通告： | Product Discontinuation 28/Nov/2011 |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | 時鐘/日歷 |
| 特點(diǎn)： | 警報(bào)器，F(xiàn)RAM，閏年，方波輸出，TCXO/晶體 |
| 存儲容量： | 8KB |
| 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 ~ 3.63 V |
| 電壓 - 電源，電池： | 2.3 V ~ 3.6 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-SOIC W |
| 包裝： | 帶卷 (TR) |
DS32B35/DS32C35
Accurate I2C RTC with Integrated
TCXO/Crystal/FRAM
20
____________________________________________________________________
S - START
A - ACKNOWLEDGE
P - STOP
A - NOT ACKNOWLEDGE
R/W - READ/WRITE OR DIRECTION BIT ADDRESS = D1h
A
XXXXXXXX
A
S
1
XXXXXXXX
A
XXXXXXXX
A
XXXXXXXX
A
P
<SLAVE ADDRESS> <R/W>
<DATA (n)>
<DATA (n + 1)>
<DATA (n + 2)>
<DATA (n + X)>
DATA TRANSFERRED
(X + 1 BYTES + ACKNOWLEDGE)
NOTE: LAST DATA BYTE IS FOLLOWED BY A NOT ACKNOWLEDGE (A) SIGNAL.
...
MASTER TO SLAVE
SLAVE TO MASTER
1010A10A9A8
Figure 6. Data Read—DS32B35 FRAM Slave Transmitter Mode
A
XXXA12A11A10A9A8
A
1010000
S
0
A
XXXXXXXX
A
XXXXXXXX
A
P
<SLAVE ADDRESS> <R/W>
<WORD ADDRESS>
<DATA (n)>
<DATA (n + 1)>
S - START
A - ACKNOWLEDGE
P - STOP
R/W - READ/WRITE BIT
DATA TRANSFERRED
(X + 1 BYTES + ACKNOWLEDGE)
A7A6A5A4A2A1A0
...
MASTER TO SLAVE
SLAVE TO MASTER
Figure 7. Data Write—DS32C35 FRAM Slave Receiver Mode
S - START
A - ACKNOWLEDGE
P - STOP
A - NOT ACKNOWLEDGE
R/W - READ/WRITE OR DIRECTION BIT ADDRESS = D1h
A
XXXXXXXX
A
1010000
S
1
XXXXXXXX
A
XXXXXXXX
A
XXXXXXXX
A
P
<SLAVE ADDRESS> <R/W>
<DATA (n)>
<DATA (n + 1)>
<DATA (n + 2)>
<DATA (n + X)>
DATA TRANSFERRED
(X + 1 BYTES + ACKNOWLEDGE)
NOTE: LAST DATA BYTE IS FOLLOWED BY A NOT ACKNOWLEDGE (A) SIGNAL.
...
MASTER TO SLAVE
SLAVE TO MASTER
Figure 8. Data Read—DS32C35 FRAM Slave Transmitter Mode
Handling, PCB Layout, and
Assembly
The DS32B35/DS32C35 package contains a quartz tun-
ing-fork crystal. Pick-and-place equipment can be
used, but precautions should be taken to ensure that
excessive shocks are avoided. Ultrasonic cleaning
should be avoided to prevent damage to the crystal.
Avoid running signal traces under the package, unless
a ground plane is placed between the package and
the signal line. All N.C. (no connection) pins must be
connected to ground.
Moisture-sensitive packages are shipped from the fac-
tory dry packed. Handling instructions listed on the
package label must be followed to prevent damage
during reflow. Refer to the IPC/JEDEC J-STD-020 stan-
dard for moisture-sensitive device (MSD) classifications
and reflow profiles. Exposure to reflow is limited to 2x
maximum.
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