AT90RF135602 ATMEL, AT90RF135602 Datasheet - Page 31

• Manufacturer Part Number: AT90RF135602
• Description: INTEGRATED 13.56 MHz CONTACTLESS READER WITH EMBEDED SOFTWARE
• Manufacturer: ATMEL

Table 2. Interface Timing Parameters
Note:
4407A–SCR–04/05
1
2
3
4
5
6
7
8
9
10
11
12
Id
AT90RF135602 Cold Power up time
SPI /SS low to exit from sleep mode
(warm power up time)
SPI /SS high to entry into sleep mode
SPI /SS low to SPI SCK high
SPI SCK Period
SPI Data Rate
SPI LSB to MSB period
SPI SCK low to SPI /SS high
SPI /SS high time
transmission of command 0x80 to read 16 bytes
Reading 16 bytes from mifare ultralight tag
polling the response to the read
/SS high to MISO tri-state
/SS low to MISO output
1. “-“ No value applicable
2. The AT90RF135602 will enter its power saving sleep mode when the /SS line is inactive (high) and any tag read/write oper-
3. The AT90RF135602 will exit its sleep mode when /SS goes active (low).
4. The Host should maintain /SS active only for the duration of the communication, this allows the AT90RF135602 to know
5. The AT90RF135602 will tri-state the MISO line when /SS is high.
6. The AT90RF135602 will enter serial programming mode if /RESET is held low.
ation has been completed.
when it is safe to enter sleep mode or when its SPI transmission buffer may be updated.
Description
low
high
high
RESET
_____
-
high
low
SS
__
Reserved
SPI interface sleeping MISO tri-state
SPI interface active
non-poll : 50
non-poll : 23
Min (µs)
poll : 40
poll : 10
3.2
3
6
3
-
-
-
-
-
Interface Mode
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Typical
498 ms
0.8 ms
8.0 ms
1.3 ms
20 us
20 us
10 ns
15 ns
-
-
-
-
-
-
Max
(µs)
-
-
-
-
-
-
-
-
-
-
-
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