C8051F93X-C8051F92X 데이터 시트보기 (PDF) - Silicon Laboratories

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C8051F93X-C8051F92X

Single/Dual Battery, 0.9–3.6 V, 64/32 kB, SmaRTClock, 10-Bit ADC MCU

Silicon Laboratories 

C8051F93x-C8051F92x

5.4. Programmable Window Detector

The ADC Programmable Window Detector continuously compares the ADC0 output registers to user-

programmed limits, and notifies the system when a desired condition is detected. This is especially

effective in an interrupt-driven system, saving code space and CPU bandwidth while delivering faster

system response times. The window detector interrupt flag (AD0WINT in register ADC0CN) can also be

used in polled mode. The ADC0 Greater-Than (ADC0GTH, ADC0GTL) and Less-Than (ADC0LTH,

ADC0LTL) registers hold the comparison values. The window detector flag can be programmed to indicate

when measured data is inside or outside of the user-programmed limits, depending on the contents of the

ADC0 Less-Than and ADC0 Greater-Than registers.

SFR Definition 5.8. ADC0GTH: ADC0 Greater-Than High Byte

Bit

7

6

5

4

3

2

1

0

Name

Type

AD0GT[15:8]

R/W

Reset

1

1

1

1

1

1

1

1

SFR Page = 0x0; SFR Address = 0xC4

Bit

Name

Function

7:0 AD0GT[15:8] ADC0 Greater-Than High Byte.

Most Significant Byte of the 16-bit Greater-Than window compare register.

SFR Definition 5.9. ADC0GTL: ADC0 Greater-Than Low Byte

Bit

7

6

5

4

3

2

1

0

Name

Type

AD0GT[7:0]

R/W

Reset

1

1

1

1

1

1

1

1

SFR Page = 0x0; SFR Address = 0xC3

Bit Name

Function

7:0 AD0GT[7:0] ADC0 Greater-Than Low Byte.

Least Significant Byte of the 16-bit Greater-Than window compare register.

Note: In 8-bit mode, this register should be set to 0x00.

Rev. 1.3

81

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