T48C862-R3 datasheet(70/107 Pages) ATMEL

tên linh kiện	T48C862-R3

Giải thích chi tiết về linh kiện	Microcontroller with UHF ASK/FSK Transmitter

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T48C862-R3

4554A–4BMCU–02/03

Figure 66. Example of 8-bit Synchronous Transmit Operation

Figure 67. Example of 8-bit Synchronous Receive Operation

9-bit Shift Mode (MCL)

In the 9-bit shift mode, the SSI is able to handle the MCL protocol (described below). It

always operates as an MCL master device, i.e., SC is always generated and output by

the SSI. Both the MCL start and stop conditions are automatically generated whenever

the SSI is activated or deactivated by the SIR-bit. In accordance with the MCL protocol,

the output data is always changed in the clock low phase and shifted in on the high

phase.

76543 21

7 6 543 210 7 6 54 321

msb

lsb

tx data 1

tx data 2

tx data 3

msb

lsb msb

lsb

Write STB

(tx data 2)

Write STB

(tx data 3)

Write STB

(tx data 1)

SIR

SRDY

Interrupt

(IFN = 0)

Interrupt

(IFN = 1)

ACT

43210

7 6 543 210

msb

lsb

rx data 1

rx data 2

rx data 3

msb

lsb

msb

lsb

Read SRB

(rx data 2)

Read SRB

(rx data 3)

Read SRB

(rx data 1)

SIR

SRDY

Interrupt

(IFN = 0)

Interrupt

(IFN = 1)

ACT

7 6 5

4 3210

76 5

7 6 5 4

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