C8051F236 Silicon Laboratories Inc, C8051F236 Datasheet - Page 21

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

Specifications of C8051F236

• 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
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• 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
• Package / Case: 48-TQFP, 48-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

ADC data is continuously monitored by a programmable window detector, which interrupts the CPU when
data is within the user-programmed window. This allows the ADC to monitor key system voltages in back-
ground mode, without the use of CPU resources.
1.7.
The MCU's have two on-chip voltage comparators. The inputs of the comparators are available at pack-
age pins as illustrated in Figure 1.11. Each comparator's hysteresis is software programmable via special
function registers (SFR's). Both voltage level and positive/negative going symmetry can be easily pro-
grammed by the user. Additionally, comparator interrupts can be implemented on either rising or falling-
edge output transitions. Please see 8.‘Comparators” on page 52 for details.
port pin may be configured as
(only 22 input port pins on
AIN0-31 are port 0-3
pins -- any external
an analog input
Comparators
'F221)
AIN31
AIN0
AIN1
Figure 1.10. ADC Diagram
32-to-1
AMUX
Rev. 1.6
X
Programmable
Gain Amp
GND
+
-
Control & Data
SFR's
VDD
C8051F2xx
SFR Bus
100ksps
ADC
SAR
VREF
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