LRIS2K-A1S/1GE STMicroelectronics, LRIS2K-A1S/1GE Datasheet - Page 92
LRIS2K-A1S/1GE
Manufacturer Part Number
LRIS2K-A1S/1GE
Description
IC MEMORY TAG 64BIT UID ADH ANT
Manufacturer
STMicroelectronics
Series
LRIS2Kr
Datasheet
1.LRIS2K-A1S1GE.pdf
(98 pages)
Specifications of LRIS2K-A1S/1GE
Rf Type
Read / Write
Frequency
13.56MHz
Features
ISO15693, ISO18000-3, 2048-bits
Package / Case
76mm x 45mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-5534-2
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Anticollision algorithm (Informative)
Appendix A
A.1
92/98
The following pseudocode describes how anticollision could be implemented on the VCD,
using recursivity.
Algorithm for pulsed slots
function push (mask, address); pushes on private stack
function pop (mask, address); pops from private stack
function pulse_next_pause; generates a power pulse
function store(LRIS2K_UID); stores LRIS2K_UID
function poll_loop (sub_address_size as integer)
last stored collision
end poll_loop
main_cycle:
end_main_cycle
pop (mask, address)
mask = address & mask; generates new mask
mode = anticollision
send_Request (Request_cmd, mode, mask length, mask value)
for sub_address = 0 to (2^sub_address_size - 1)
if stack_not_empty ; if some collisions have been detected and
mask = null
address = null
push (mask, address)
poll_loop(sub_address_size)
pulse_next_pause
if no_collision_is_detected ; LRIS2K is inventoried
next sub_address
then
endif
then
else ; remember a collision was detected
endif
poll_loop (sub_address_size); recursively to process the
Anticollision algorithm (Informative)
store (LRIS2K_UID)
push(mask,address)
; send the request
; not yet processed, the function calls itself
Doc ID 13888 Rev 8
LRIS2K
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