ATAM862P-TNSY4D Atmel, ATAM862P-TNSY4D Datasheet - Page 75
ATAM862P-TNSY4D
Manufacturer Part Number
ATAM862P-TNSY4D
Description
IC MCU FLASH 4K TX 433MHZ 24SSOP
Manufacturer
Atmel
Datasheet
1.ATAM862P-TNQY4D.pdf
(110 pages)
Specifications of ATAM862P-TNSY4D
Applications
UHF ASK/FSK
Core Processor
MARC4
Program Memory Type
FLASH (4 kB)
Controller Series
MARC4 4-Bit
Ram Size
256 x 4
Interface
SSI
Number Of I /o
11
Voltage - Supply
1.8 V ~ 4 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
24-SSOP
Processor Series
ATAM862x
Core
MARC4
Data Bus Width
4 bit
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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and the SSI will continue clocking in the next telegram. Should, however, the first telegram not
have been read (SRDY = 1), then the SSI will stop, temporarily holding the second telegram in
the shift register until a certain point of time when the controller is able to service the receive
buffer. In this way no data is lost or overwritten.
Deactivating the SSI (SIR = 1) in mid-telegram will immediately stop the shift clock and latch the
present contents of the shift register into the receive buffer. This can be used for clocking in a
data telegram of less than 8 bits in length. Care should be taken to read out the final complete
8-bit data telegram of a multiple word message before deactivating the SSI (SIR = 1) and termi-
nating the reception. After termination, the shift register contents will overwrite the receive
buffer.
Figure 23-17. Example of 8-bit Synchronous Transmit Operation
Figure 23-18. Example of 8-bit Synchronous Receive Operation
(IFN = 0)
(IFN = 1)
Interrupt
Interrupt
SRDY
ACT
(IFN = 0)
(IFN = 1)
SIR
Interrupt
Interrupt
SD
SC
SRDY
ACT
SIR
SD
SC
msb
7 6 5
Write STB
(tx data 1)
rx data 1
4 3 2 1 0
msb
7 6 5 4 3 2 1
tx data 1
lsb
msb
7 6 5
lsb
rx data 2
0
4 3 2 1 0
Write STB
(tx data 2)
lsb
msb
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1
Write STB
(tx data 3)
tx data 2
Read SRB
(rx data 1)
lsb msb
msb
7 6 5 4 3 2 1 0
Read SRB
(rx data 2)
rx data 3
tx data 3
ATAM862-4
lsb
lsb
Read SRB
(rx data 3)
0
7 6 5 4
75
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