C8051F920-GQ Silicon Laboratories Inc, C8051F920-GQ Datasheet - Page 78

• Manufacturer Part Number: C8051F920-GQ
• Description: IC 8051 MCU 32K FLASH 32-LQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F9xxr

Specifications of C8051F920-GQ

• Program Memory Type: FLASH
• Program Memory Size: 32KB (32K x 8)
• Package / Case: 32-LQFP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 24
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 3.6 V
• Data Converters: A/D 23x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F9x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 4.25 KB
• Interface Type: UART, SPI, SMBus
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 4
• Operating Supply Voltage: 0.9 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F930DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 23-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1473 - KIT DEV C8051F920,F921,F930,F931
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1469

C8051F93x-C8051F92x
5.4.
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
SFR Page = 0x0; SFR Address = 0xC4
SFR Definition 5.9. ADC0GTL: ADC0 Greater-Than Low Byte
SFR Page = 0x0; SFR Address = 0xC3
78
Note: In 8-bit mode, this register should be set to 0x00.
Name
Reset
Name
Reset
Type
Bit
7:0
Type
Bit
7:0
Bit
Bit
AD0GT[7:0]
AD0GT[15:8]
Programmable Window Detector
Name
Name
7
1
7
1
ADC0 Greater-Than Low Byte.
Least Significant Byte of the 16-bit Greater-Than window compare register.
ADC0 Greater-Than High Byte.
Most Significant Byte of the 16-bit Greater-Than window compare register.
6
1
6
1
5
1
5
1
Rev. 1.1
4
1
4
1
AD0GT[15:8]
AD0GT[7:0]
R/W
R/W
Function
Function
3
1
3
1
2
1
2
1
1
1
1
1
0
1
0
1