T83C5121XXX-ICSIL datasheet(46/115 Pages) ATMEL

tên linh kiện	T83C5121XXX-ICSIL

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

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A/T8xC5121

4164G–SCR–07/06

Table 27. SCWT2 Register

SCWT2 (S:B6h, SCRS = 0)

Smart Card Character/Block Wait Time Register 2

Reset Value = 0000 0000b

Table 28. SCWT1 Register

SCWT1 (S:B5h, SCRS = 0) Smart Card Character/Block Wait Time Register 1

Reset Value = 0010 0101b

Table 29. SCWT0 Register

SCWT0 (S:B4h, SCRS = 0)

Smart Card Character/Block Wait Time Register 0

Reset Value = 1000 0000b

WT23

WT22

WT21

WT20

WT19

WT18

WT17

WT16

Bit

Number

Bit

Mnemonic

Description

7-0

WT[23:16]

Wait Time Byte 2

Used together with WT[15:0] (see SCWT0 Register).

WT15

WT14

WT13

WT12

WT11

WT10

WT9

WT8

Bit

Number

Bit

Mnemonic

Description

7-0

WT[15:8]

Wait Time Byte 1

Used together with WT[23:16] and WT[7:0] (see SCWT0 Register).

WT7

WT6

WT5

WT4

WT3

WT2

WT1

WT0

Bit

Number

Bit

Mnemonic

Description

7-0

WT[7:0]

Wait Time Byte 0

WT[23:0] is the reload value of the Wait Time counter WTC.

The WTC is a general-purpose Timer 0. It is using the ETU clock and is

controlled by the WTEN bit (see Section “Waiting Time Counter (WT)”).

When UART bit of SCICR Register is set, the WTC is automatically reloaded at

each start bit of the UART. It is used to check the maximum time between to

consecutive start bits.

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