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参数资料
| 型号： | DS32C35-33#T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/22页 |
| 文件大小： | 0K |
| 描述： | IC RTC ACCURATE I2C 3.3V 20-SOIC |
| 产品变化通告： | Product Discontinuation 28/Nov/2011 |
| 标准包装： | 1,000 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，FRAM，闰年，方波输出，TCXO/晶体 |
| 存储容量： | 8KB |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | I²C，2 线串口 |
| 电源电压： | 2.7 V ~ 3.63 V |
| 电压 - 电源，电池： | 2.3 V ~ 3.6 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SOIC W |
| 包装： | 带卷 (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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