參數(shù)資料
型號(hào): uPSD3233
廠商: 意法半導(dǎo)體
英文描述: Flash Programmable System Device with 8032 Microcontroller Core(嵌入高速“8032微控制器核”的Flash型可編程系統(tǒng)器)
中文描述: 閃存可編程系統(tǒng)器件與8032微控制器內(nèi)核(嵌入高速“8032微控制器核”的閃存型可編程系統(tǒng)器)
文件頁(yè)數(shù): 87/164頁(yè)
文件大小: 1133K
代理商: UPSD3233
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μ
PSD3200 FAMILY
DRAFT(Thursday 20 June 2002, 13:15).
between low speed devices and theports to which
they are connected.
Figure 41. Low Speed Driver Signal Waveforms
Receiver Characteristics
The
μ
PSD3200 Family has a differential input re-
ceiver which is able to accept the USB data signal.
The receiverfeatures aninput sensitivity of at least
200mV when both differential data inputs are in
the range of at least 0.8V to 2.5V with respect to
its local ground reference. This is the common
mode range, as shown in Figure 42. The receiver
tolerates static input voltages between -0.5V to
3.8V with respect to its local ground reference
without damage. In addition to the differential re-
ceiver, there isa single-ended receiver for each of
the two data lines. The single-ended receivers
have a switching thresholdbetween 0.8V and 2.0V
(TTL inputs).
Figure 42. Differential Input Sensitivity Over Entire Common Mode Range
External USB Pull-Up Resistor
The USB system specifiesa pull-up resistor on the
D- pin for low-speed peripherals. The USB
Spec 1.1 describes a 1.5k
pull-up resistor to a
3.3V supply. An approved alternative method is a
7.5kW pull-up to the USB VCC supply. This alter-
native is defined for low-speed devices with an in-
tegrated cable. The chip is specified for the 7.5kW
pull-up. This eliminates the need for an external
3.3V regulator, or for a pin dedicated to providing
a 3.3V output from the chip.
AI06629
Signal
pins
pass output
spec levels
with
minimal
reflections
and
ringing
One Bit
Time
1.5 Mb/s
V
SS
Driver
Signal Pins
V
SE
(min)
V
SE
(max)
AI06630
0.0
0.0
0.2
0.4
0.6
1.0
0.8
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
Common Mode Input Voltage (volts)
M
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPSD3233A-24T1 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core
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