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SLRC400 Datasheet(PDF) 21 Page - NXP Semiconductors

Part # SLRC400
Description  ICODE reader IC
PDF  101 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

SLRC400 Datasheet(HTML) 21 Page - NXP Semiconductors

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SLRC400_33
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.3 — 23 March 2010
054333
21 of 101
NXP Semiconductors
SLRC400
ICODE reader IC
8.6 Power reduction modes
8.6.1 Hard power-down
Hard power-down is enabled when pin RSTPD is HIGH. This turns off all internal current
sinks including the oscillator. All digital input buffers are separated from the input pads and
defined internally (except pin RSTPD itself). The output pins are frozen at a given value.
The status of all pins during a hard power-down is shown in Table 19.
8.6.2 Soft power-down mode
Soft power-down mode is entered immediately using the Control register bit PowerDown.
All internal current sinks, including the oscillator buffer, are switched off. The digital input
buffers are not separated from the input pads and keep their functionality. In addition, the
digital output pins do not change their state.
TStartTxBegin
TimerControl
0
2Bh
TStartTxEnd
TimerControl
1
2Bh
TStopNow
Control
2
09h
TStopRxBegin
TimerControl
2
2Bh
TStopRxEnd
TimerControl
3
2Bh
Table 18.
Associated timer unit registers and flags
Flags
Register name
Bit
Register address
Table 19.
Signal on pins during Hard power-down
Symbol
Pin
Type
Description
OSCIN
1
I
not separated from input, pulled to AVSS
IRQ
2
O
high-impedance
n.c.
3
I
separated from input
SIGOUT
4
O
LOW
TX1
5
O
HIGH
TX2
7
O
LOW
NCS
9
I
separated from input
NWR
10
I
separated from input
NRD
11
I
separated from input
D0 to D7
13 to 20
I/O
separated from input
ALE
21
I
separated from input
A0
22
I/O
separated from input
A1
23
I
separated from input
A2
24
I
separated from input
AUX
27
O
high-impedance
RX
29
I
not changed
VMID
30
A
pulled to VDDA
RSTPD
31
I
not changed
OSCOUT
32
O
HIGH



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