T83C5121XXX-ICSIL datasheet(45/115 Pages) ATMEL

tên linh kiện	T83C5121XXX-ICSIL

Giải thích chi tiết về linh kiện	8-bit Microcontroller with Multiprotocol Smart Card Interface

PDF	115 Pages

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nhà sản xuất	ATMEL [ATMEL Corporation]

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A/T8xC5121

4164G–SCR–07/06

Table 24. SCETU0 Register

SCETU0 (S:ACh, SCRS = 1)

Smart Card ETU Register 0

Reset Value = 0111 0100b

Table 25. SCGT1 Register

SCGT1 (S:B5h, SCRS = 1)

Smart Card Transmit Guard Time Register 1

Reset Value = XXXX XXX0b

Table 26. SCGT0 Register

SCGT0 (S:B4h, SCRS = 1)

Smart Card Transmit Guard Time Register 0

Reset Value = 0000 1100b

ETU7

ETU6

ETU5

ETU4

ETU3

ETU2

ETU1

ETU0

Bit

Number

Bit

Mnemonic

Description

7-0

ETU[7:0]

ETU LSB

The Elementary Time Unit is (ETU[10:0] - 0.5*COMP)/f, where f is the Card CLK

frequency.

According to ISO7816, ETU[10:0] can be set between 11 and 2047.

The default reset value of ETU[10:0] is 372 (F = 372, D = 1).

––

–

GT8

Bit

Number

Bit

Mnemonic

Description

7-1

–

Reserved

The value read from these bits is indeterminate. Do not change these bits .

0GT8

Transmit Guard Time MSB

Used together with the Transmit Guard Time LSB (see SCGT0 Register).

GT7GT6

GT5GT4

GT3GT2

GT1

GT0

Bit

Number

Bit

Mnemonic

Description

7-0

GT[7:0]

Transmit Guard Time LSB

The minimum time between two consecutive start bits in transmit mode is

GT[8:0] * ETU.

According to ISO 7816, GT can be set between 11 and 266 (11 to 254+12 ETU).

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