digital output military grade pressure sensors
0404
0404
04
24-Jun-02
Asynchronous Command Summary
(1,2)
Command
RD
RM
RO
RP
RR
RS
WD<Mode>
WO<Offset>
U<S/N><Cmd>
Description
Read Mode Setting
Read Model Information
Read User Offset Setting
Read Pressure
Read Device Pressure Range
Read Serial Number
Write Mode Setting (“S” = Standard, “H” = High Resolution)
Write User Offset Setting
Select Unique Part for following command (for multidrop
configurations).
t1
t3
t2
t10
t2
t9t4 t8
t6
t7
Bit
15
MSB
Bit
14
Bit
13
Bit
12
Bit
11
Bit
10
Bit
9
Bit
8
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
LSB
t5
READY [Output]
CONVERT [Input]
CLOCK [Output]
DATA [Output]
Ref Parameter Min Typ Max Units
t1 Conversion Time -- 8 16 msec
t2 Ready to Convert 0 -- -- usec
t3 Convert to Clock 24 32 39 usec
t4 Clock Period -- 16 -- usec
t5 Clock High Time -- 8 -- usec
Ref Parameter Min Typ Max Units
t6 Data Setup Time -- 3 -- usec
t7 Data Hold Time -- 3 -- usec
t8 Interbyte Delay -- 57 -- usec
t9 Clock to Ready -- 14 -- usec
t10 Data Transmission -- 335 -- usec
Synchronous Timing Diagram (Note: Asynchronous mode timing is per RS-232)
Response
RD=<Mode>
RM=<Model String>
RO=<hhhh>
RP=<hhhh>
RR=<Range String>
RS=<Serial Number String>
WD=<Mode>
WO=<hhhh>
U<S/N><Cmd>
Asynchronous Command Notes
NOTE 1: ALL COMMANDS AND RESPONSES ARE IN ASCII CHARACTER FORMAT AND ARE TERMINATED BY A CARRIAGE RETURN (CARRIAGE RETURNS ARE NOT SHOWN
IN
COMMAND AND RESPONSE TABLE). EXAMPLE: THE READ PRESSURE COMMAND (REPRESENTED BY: RP<CR>) IS GIVEN BY THE FOLLOWING THREE BYTE
SEQUENCE
: 0X52 0X50 0X0D
NOTE 2: <HHHH> IS A FOUR BYTE ASCII STRING REPRESENTING A 16-BIT SIGNED VALUE. EXAMPLE: P=2B7D REPRESENTS THE RESPONSE OF AN RP COMMAND
WITH
THE PRESSURE OUTPUT OF 0X2B7D (11,133 DECIMAL) VALUE.
All Sensors reserves the right to make changes to any products herein. All Sensors does not assume any liability arising out of the application or use of any product or
circuit described herein, neither does it convey any license under its patent rights nor the rights of others.
® MICROWIRE/PLUS IS A REGISTERED TRADEMARK OF NATIONAL SEMICONDUCTOR.
