C8051F236-GQ Silicon Laboratories Inc, C8051F236-GQ Datasheet - Page 37

• Manufacturer Part Number: C8051F236-GQ
• Description: IC 8051 MCU 8K FLASH 48TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F2xxr

Specifications of C8051F236-GQ

• Program Memory Type: FLASH
• Program Memory Size: 8KB (8K x 8)
• Package / Case: 48-TQFP, 48-VQFP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 32
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F2x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 1.25 KB
• Interface Type: SPI/UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 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: C8051F226DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 32 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1244

5.3.
The ADC programmable window detector is very useful in many applications. It continuously compares
the ADC output to user-programmed limits and notifies the system when an out-of-band 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 (ADWINT in ADC0CN)
can also be used in polled mode. The high and low bytes of the reference words are loaded into the ADC
Greater-Than and ADC Less-Than registers (ADC0GTH and ADC0LTH).
Bits7–0: ADC Data Word Bits
Bits7–0:
The high byte of the ADC Greater-Than Data Word.
Bits7–0:
The high byte of the ADC Less-Than Data Word.
SFR Definition 5.6. ADC0LTH: ADC Less-Than Data Byte (‘F220/1/6 and ‘F206)
MSB
SFR Definition 5.5. ADC0GTH: ADC Greater-Than Data (‘F220/1/6 and ‘F206)
R/W
R/W
R/W
Bit7
Bit7
Bit7
ADC Programmable Window Detector
SFR Definition 5.4. ADC0H: ADC Data Word (‘F220/1/6 and ‘F206)
EXAMPLE : ADC Data Word Conversion Map
R/W
R/W
Bit6
R/W
Bit6
Bit6
AIN – GND(Volts)
REF x (255/256)
REF x (127/256)
REF x ½
R/W
Bit5
R/W
R/W
Bit5
Bit5
0
R/W
Bit4
R/W
Bit4
R/W
Bit4
Rev. 1.6
R/W
Bit3
R/W
Bit3
R/W
Bit3
R/W
Bit2
R/W
Bit2
R/W
Bit2
ADC0H
0xFF
0x7F
0x80
0x00
R/W
Bit1
R/W
Bit1
R/W
Bit1
C8051F2xx
LSB
R/W
Bit0
R/W
Bit0
R/W
Bit0
SFR Address:
SFR Address:
Reset Value
SFR Address:
Reset Value
00000000
Reset Value
11111111
00000000
0xBF
0xC5
0xC7
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