C8051F521A-IM Silicon Laboratories Inc, C8051F521A-IM Datasheet - Page 71

• Manufacturer Part Number: C8051F521A-IM
• Description: IC 8051 MCU 8K FLASH 10DFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F52xr

Specifications of C8051F521A-IM

• Program Memory Type: FLASH
• Program Memory Size: 8KB (8K x 8)
• Package / Case: 10-DFN
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 6
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.25 V
• Data Converters: A/D 6x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Processor Series: C8051F5x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI/UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 6
• Number Of Timers: 3
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F500DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 6-ch x 12-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1488 - KIT DEV C8051F53XA, C8051F52XA770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1455 - ADAPTER PROGRAM TOOLSTICK F520
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1490-5

4.5.1. Window Detector In Single-Ended Mode
Figure 4.7
ADC0LTH:ADC0LTL = 0x0200 (512d) and ADC0GTH:ADC0GTL = 0x0100 (256d). The input voltage can
range from 0 to V
value. The repeat count is set to one. In the left example, an AD0WINT interrupt will be generated if the
ADC0 conversion word (ADC0H:ADC0L) is within the range defined by ADC0GTH:ADC0GTL and
ADC0LTH:ADC0LTL (if 0x0100 < ADC0H:ADC0L < 0x0200). In the right example, and AD0WINT interrupt
will be generated if the ADC0 conversion word is outside of the range defined by the ADC0GT and
ADC0LT registers (if ADC0H:ADC0L < 0x0100 or ADC0H:ADC0L > 0x0200). Figure 4.8 shows an exam-
ple using left-justified data with the same comparison values.
VREF x (4095/4096)
VREF x (4095/4096)
VREF x (512/4096)
VREF x (256/4096)
VREF x (512/4096)
VREF x (256/4096)
Input Voltage
(Px.x - GND)
Input Voltage
(Px.x - GND)
Figure 4.7. ADC Window Compare Example: Right-Justified Single-Ended Data
Figure 4.8. ADC Window Compare Example: Left-Justified Single-Ended Data
0
0
shows
ADC0H:ADC0L
ADC0H:ADC0L
REF
0x0FFF
0x01FF
0x00FF
0xFFF0
0x1FF0
0x0FF0
0x0201
0x0200
0x0101
0x0100
0x0000
0x2010
0x2000
0x1010
0x1000
0x0000
x (4095/4096) with respect to GND, and is represented by a 12-bit unsigned integer
two
example
ADC0GTH:ADC0GTL
ADC0LTH:ADC0LTL
ADC0GTH:ADC0GTL
ADC0LTH:ADC0LTL
not affected
not affected
AD0WINT
AD0WINT
not affected
not affected
AD0WINT
AD0WINT
C8051F52x/F52xA/F53x/F53xA
AD0WINT=1
window
AD0WINT=1
Rev. 1.3
VREF x (512/4096)
VREF x (256/4096)
comparisons
VREF x (4095/4096)
VREF x (512/4096)
VREF x (256/4096)
VREF x (4095/
Input Voltage
(Px.x - GND)
Input Voltage
(Px.x - GND)
4096)
0
0
ADC0H:ADC0L
ADC0H:ADC0L
0x0FFF
0x0201
0x0200
0x01FF
0x0101
0x0100
0x00FF
0x0000
for
0xFFF0
0x1FF0
0x0FF0
0x2010
0x2000
0x1010
0x1000
0x0000
right-justified
ADC0GTH:ADC0GTL
ADC0LTH:ADC0LTL
ADC0GTH:ADC0GTL
ADC0LTH:ADC0LTL
not affected
AD0WINT
not affected
AD0WINT
AD0WINT=1
AD0WINT=1
data
AD0WINT=1
AD0WINT=1
with
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