ISP1181BBS,557 NXP Semiconductors, ISP1181BBS,557 Datasheet - Page 44
ISP1181BBS,557
Manufacturer Part Number
ISP1181BBS,557
Description
Manufacturer
NXP Semiconductors
Datasheet
1.ISP1181BBS557.pdf
(73 pages)
Specifications of ISP1181BBS,557
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
48
Lead Free Status / Rohs Status
Compliant
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ISP1181B_3
Product data sheet
Fig 12. Oscillator and LazyClock logic.
Fig 13. CLKOUT signal timing at ‘suspend’ and ‘resume’.
If enabled, the 100 kHz
SUSPEND
GOSUSP
WAKEUP
CLKOUT
CLKDIV [ 3:0 ]
configuration
CLKRUN
NOLAZY
hardware
register
.
.
.
.
.
.
When ISP1181B enters ‘suspend’ state (by setting and clearing bit GOSUSP in the Mode
Register), outputs SUSPEND and CLKOUT change state after approximately 2 ms delay.
When NOLAZY = 0, the clock signal on output CLKOUT does not stop, but changes to the
100 kHz
When resuming from ‘suspend’ state by a positive pulse on input WAKEUP, output
SUSPEND is cleared and the clock signal on CLKOUT is restarted after a 0.5 ms delay.
The timing of the CLKOUT signal at ‘suspend’ and ‘resume’ is given in
SUSPEND
50 % LazyClock frequency will be output on pin CLKOUT during ‘suspend’ state.
50 % LazyClock frequency.
1.8 to 2.2 ms
XTAL OSC
Rev. 03 — 23 January 2009
4
enable
6 MHz
LAZYCLOCK
PLL 8
enable
enable
48 MHz
100 (±50 %) kHz
Full-speed USB peripheral controller
0.5 ms
(N + 1)
N
PLL circuit stable
3 to 4 ms
MGS775
0
1
NOLAZY
© ST-NXP Wireless 2009. All rights reserved.
ISP1181B
Figure
CLKOUT
MGS776
13.
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