参数资料
型号: DS18S20+PAR
厂商: Maxim Integrated
文件页数: 15/20页
文件大小: 0K
描述: IC THERM MICROLAN HI-PREC TO-92
产品培训模块: 1-Wire Communications
Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 500
感应温度: -55°C ~ 125°C
输出类型: 数字
电源电压: 3 V ~ 5.5 V
精确度: ±0.5°C
封装/外壳: TO-226-3、TO-92-3 标准主体
供应商设备封装: TO-92-3
包装: 管件
DS18S20-PAR
release the bus by the end of the time slot, and the bus will be pulled back to its high idle state by the
pullup resister. Output data from the DS18S20-PAR is valid for 15 m s after the falling edge that initiated
the read time slot. Therefore, the master must release the bus and then sample the bus state within 15 m s
from the start of the slot.
Figure 13 illustrates that the sum of T INIT , T RC , and T SAMPLE must be less than 15 m s for a read time slot.
Figure 14 shows that system timing margin is maximized by keeping T INIT and T RC as short as possible
and by locating the master sample time during read time slots towards the end of the 15 m s period.
DETAILED MASTER READ 1 TIMING Figure 13
V PU
1-WIRE BUS
GND
VIH of Master
T INT > 1 m s
T RC
Master samples
15 m s
RECOMMENDED MASTER READ 1 TIMING Figure 14
V PU
1-WIRE BUS
GND
T INT = T RC =
small small
VIH of Master
15 m s
LINE TYPE LEGEND
Bus master pulling low
Resistor pullup
15 of 20
Master samples
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