AT83C5122_08 ATMEL [ATMEL Corporation], AT83C5122_08 Datasheet - Page 92
AT83C5122_08
Manufacturer Part Number
AT83C5122_08
Description
C51 Microcontroller with USB and Smart Card Reader Interfaces
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT83C5122_08.pdf
(208 pages)
- Current page: 92 of 208
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DC/DC Converter register
Table 61. DC/DC Converter Control Register - DCCKPS (S:BFh)
Reset Value = 0000 0000b
92
Bit Number
MODE
5 - 4
3 - 0
7
7
6
AT83R5122, AT8xC5122/23
Bit Mnemonic
DCCKPS[3:0]
OVFADJ
BOOST[1:0]
OVFADJ
MODE
6
Description
Regulation mode
0 : Pump mode (External Inductance required)
1 : Regulator mode (No External inductance required if VCC > CVCC+0.3V)
Current Overflow Adjustment on Smart Card terminal
0 : normal: 100 mA average
1 : normal + 20%
VCARDOK=0
Maximum Startup Current drawn from power supply
00 : Normal: 30 mA average
01 : Normal + 30%
10 : Normal + 50%
11 : Normal + 80%
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
BOOST1
5
BOOST0
4
DCCKPS3
3
DCCKPS2
VCARDOK=1
Current Overflow Level on Smart Card terminal
00 : Normal = OVFADJ
01 : Normal + 30%
10 : Normal + 50%
11 : Normal + 80%
2
DCCKPS1
1
4202F–SCR–07/2008
DCCKPS0
0
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