ISP1109BS-T ST-Ericsson Inc, ISP1109BS-T Datasheet - Page 15

• Manufacturer Part Number: ISP1109BS-T
• Description: IC TXRX SERIAL BUS UNIV 32HVQFN
• Manufacturer: ST-Ericsson Inc
• Type: Transceiverr

Specifications of ISP1109BS-T

• Number Of Drivers/receivers: 1/1
• Protocol: USB 2.0
• Voltage - Supply: 3 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Philips Semiconductors
9397 750 13355
Product data sheet
7.10 Power-On Reset (POR)
When V
(t
(1.5 V to 2.5 V).
To give a better view of the functionality,
at t2 to t3 and t4 to t5. If the dip at t4 to t5 is too short (that is, < 11 s), the internal POR
pulse will not react and will remain LOW. The internal POR starts with a 1 at t0. At t1, the
detector will see the passing of the trip level and a delay element will add another t
before it drops to 0.
The internal POR pulse will be generated whenever V
than 11 s.
Fig 6. Internal power-on reset timing.
PORP
) will be typically 800 ns. The pulse is started when V
CC(I/O)
(1) PORP = Power-On Reset Pulse.
t0
is directly connected to the RESET_N pin, the internal POR pulse width
t1
t
PORP
Rev. 01 — 14 July 2005
t2
Figure 6
t3
t
PORP
shows a possible curve of V
USB transceiver with carkit support
CC
t4
drops below V
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
CC
t5
rises above V
004aaa582
POR(trip)
PORP
V
ISP1109
V
CC
POR(trip)
POR(trip)
(1)
CC
for more
with dips
PORP
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