AT89C5122DS-RDRUM datasheet(92/208 Pages) ATMEL

tên linh kiện	AT89C5122DS-RDRUM

Giải thích chi tiết về linh kiện	C51 Microcontroller with USB and Smart Card Reader Interfaces

PDF	208 Pages

Scroll/Zoom	100%

nhà sản xuất	ATMEL [ATMEL Corporation]

Trang chủ	http://www.atmel.com

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AT83R5122, AT8xC5122/23

4202F–SCR–07/2008

DC/DC Converter register

Reset Value = 0000 0000b

Table 61.

DC/DC Converter Control Register - DCCKPS (S:BFh)

MODE

OVFADJ

BOOST1

BOOST0

DCCKPS3

DCCKPS2

DCCKPS1

DCCKPS0

Bit Number

Bit Mnemonic

Description

7MODE

Regulation mode

0 : Pump mode (External Inductance required)

1 : Regulator mode (No External inductance required if VCC > CVCC+0.3V)

OVFADJ

Current Overflow Adjustment on Smart Card terminal

0 : normal: 100 mA average

1 : normal + 20%

5 - 4

BOOST[1:0]

VCARDOK=0

VCARDOK=1

Maximum Startup Current drawn from power supply

00 : Normal: 30 mA average

01 : Normal + 30%

10 : Normal + 50%

11 : Normal + 80%

Current Overflow Level on Smart Card terminal

00 : Normal = OVFADJ

01 : Normal + 30%

10 : Normal + 50%

11 : Normal + 80%

3 - 0

DCCKPS[3:0]

DC/DC Clock Prescaler Value

0000 : Division factor: 2 (reset value)

0001 : Division factor: 3

0010 : Division factor: 4

0011 : Division factor: 5

0100 : Division factor: 6

0101 : Division factor: 8

0110 : Division factor: 10

0111 : Division factor: 12

1000 : Division factor: 24

Other values are reserved

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