參數(shù)資料
型號(hào)： DS2480
廠商： Maxim Integrated Products, Inc.
英文描述： Serial 1-Wire Line Driver(1線串行線驅(qū)動(dòng)器)
中文描述： 串行、1-Wire線驅(qū)動(dòng)器
文件頁(yè)數(shù)： 18/26頁(yè)
文件大?。?/td> 191K
代理商： DS2480
DS2480
042498 18/26
SINGLE BIT WITH STRONG PULL–UP
Similar to the pulse command the Single Bit command
also allows generating a strong pull–up immediately fol-
lowing a time slot. The strong pull–up of the Single Bit
command, however, is controlled directly by bit 1 of the
command code and therefore needs not be armed.
Since the DS2480 remains in command mode when
using the Single Bit command, any duration of the
strong pull–up including infinite may be selected.
Figure 9 shows the timing of the Single Bit command
with the immediately following strong pull–up. Strong
pull–up immediately following a single time slot is imple-
mented to support the DS1954 Crypto iButton. After
having received the command code to run a program,
the Crypto iButton sends out an acknowledge bit and
then starts the microcomputer to run the firmware pro-
gram for a predefined time.
SINGLE BIT WITH STRONG PULL–UP, PREDEFINED DURATION
Figure 9a
END OF PREVIOUS
TIME SLOT
5V
0V
IDLE
TIME
BEGIN OF NEXT
ACTIVITY
t
SPU
t
1
t
2
t
3
For predefined duration (Figure 9a) the timing is as fol-
lows: At t
1
the time slot is completed. Now the DS2480
activates the strong pull–up and simultaneously starts
sending the response byte of the Single Bit command to
the host. At t
2
the strong pull–up ends and the DS2480
sends out a pulse response byte. The idle time between
t
2
and t
3
is comprised of the time to transmit the pulse
response byte, plus the response time of the host plus
the time to transmit the command and/or data to gener-
ate the next time slot.
For infinite duration (Figure 9b) the strong pull–up also
begins immediately after the time slot is completed. To
end the strong pull–up, the DS2480 must receive a ter-
mination command, code F1h, which occurs at t
2
. The
termination command does not generate a response
byte. The DS2480 will then immediately end the strong
pull–up and send out a pulse response byte. Everything
else is the same as with predefined duration.
SINGLE BIT WITH STRONG PULL–UP, INFINITE DURATION
Figure 9b
END OF PREVIOUS
TIME SLOT
5V
0V
IDLE
TIME
BEGIN OF NEXT
ACTIVITY
STRONG PULL–UP ON
t
1
t
2
t
3
The minimum duration of a strong pull–up of infinite
duration strongly depends on the baud rate of the com-
munication between host and DS2480. The host must
first receive the response byte of the single–bit com-
mand, react to it and then transmit the termination com-
mand. Neglecting the hosts response time, the shortest
duration of an infinite strong pull–up therefore is
173.6
μ
s at 115.2 kbps, 347.2
μ
s at 57.6 kbps, 1.04 ms
at 19.2 kbps and 2.08 ms at 9.6 kbps.
相關(guān)PDF資料
PDF描述
DS2505-UNW UniqueWare Add-only Memory(專用只加存儲(chǔ)器)
DS2506-UNW UniqueWare Add-only Memory(專用只加存儲(chǔ)器)
DS2506 64K bit Add-Only Memory(64K位只加存儲(chǔ)器)
DS26303 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
DS26303G-120 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2480B 功能描述:緩沖器和線路驅(qū)動(dòng)器 RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
DS2480B 制造商:Maxim Integrated Products 功能描述:IC SERIAL LINE DRIVER 2480 SOIC8
DS2480B/T&R 功能描述:緩沖器和線路驅(qū)動(dòng)器 RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
DS2480B+ 功能描述:緩沖器和線路驅(qū)動(dòng)器 Serial - 1-Wire Line Driver RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
DS2480B+R 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Serial to 1-Wire Line Driver
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*