ISP1161A1BMGA STEricsson, ISP1161A1BMGA Datasheet - Page 108

• Manufacturer Part Number: ISP1161A1BMGA
• Manufacturer: STEricsson

Specifications of ISP1161A1BMGA

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

14. Power supply
15. Crystal oscillator and LazyClock
ISP1161A1_5
Product data sheet
Fig 43. Using a 5 V supply.
connector
upstream
to USB
port
1.5 kΩ
The ISP1161A1 can operate at either 5 V or 3.3 V.
When using 5 V as the ISP1161A1’s power supply input, only V
connected to the 5 V power supply. An application with a 5 V power supply input is shown
in
internal core. This internal 3.3 V can also be obtained from V
1.5 kΩ pull-up resistor of the DC side upstream port signal D_DP. The signal D_DP is
connected to the standard USB upstream port connector’s pin D+.
When using 3.3 V as the power supply input, the internal DC/DC regulator will be
bypassed. All four power supply pins (V
power supply input.
It is recommended that you connect all four power supply pins to the 3.3 V power supply,
as shown in
must connect at least V
For both 3.3 V and 5 V operation, all four power supply pins should be connected to a
decoupling capacitor.
The ISP1161A1 has a crystal oscillator designed for a 6 MHz parallel-resonant crystal
(fundamental). A typical circuit is shown in
signal of 6 MHz can be applied to input XTAL1, while leaving output XTAL2 open. See
Figure
D_DP
ISP1161A1
Figure
V reg(3.3)
46.
V hold1
V hold2
43. The ISP1161A1 has an internal DC/DC regulator to provide 3.3 V for its
V CC
Figure
44. If, however, you have board space (routing area) constraints, you
GND
Rev. 05 — 29 September 2009
CC
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and V
+5 V
reg(3.3)
Fig 44. Using a 3.3 V supply.
connector
upstream
to USB
port
to the 3.3 V power supply.
CC
, V
Figure
USB single-chip host and device controller
reg(3.3)
1.5 kΩ
45. Alternatively, an external clock
, V
hold1
D_DP
ISP1161A1
and V
reg(3.3)
V reg(3.3)
V hold1
V hold2
CC
hold2
V CC
(pin 56) can be
ISP1161A1
(pin 58) to supply the
© ST-ERICSSON 2009. All rights reserved.
) can be used as
GND
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108 of 137
+3.3 V