C8051F537-ITR Silicon Labs, C8051F537-ITR Datasheet - Page 105
![no-image](/images/no-image-200.jpg)
C8051F537-ITR
Manufacturer Part Number
C8051F537-ITR
Description
8-bit Microcontrollers - MCU 2KB 12ADC 125C 20Pin MCU
Manufacturer
Silicon Labs
Datasheet
1.C8051F536-ITR.pdf
(220 pages)
Specifications of C8051F537-ITR
Product Category
8-bit Microcontrollers - MCU
Rohs
yes
Core
8051
Data Bus Width
8 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
2 KB
Data Ram Size
256 B
On-chip Adc
Yes
Package / Case
TSSOP-20
Mounting Style
SMD/SMT
A/d Bit Size
12 bit
A/d Channels Available
16
Interface Type
SPI, UART
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
16
Number Of Timers
3
On-chip Dac
No
Processor Series
C8051
Program Memory Type
Flash
Factory Pack Quantity
2500
Supply Voltage - Max
2.7 V, 5.25 V
Supply Voltage - Min
2 V, 2.7 V
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SFR Definition 10.5. IT01CF: INT0/INT1 Configuration
Bit 7:
Bits 6–4: IN1SL2–0: INT0 Port Pin Selection Bits
Bit 3:
Bits 2–0: INT0SL2–0: INT0 Port Pin Selection Bits
Note: Refer to SFR Definition 18.1. “TCON: Timer Control” on page 186 for INT0/1 edge- or level-sensitive interrupt selection.
IN1PL
R/W
Bit7
IN1PL: INT0 Polarity
0: INT0 input is active low.
1: INT0 input is active high.
These bits select which Port pin is assigned to INT0. Note that this pin assignment is inde-
pendent of the Crossbar; INT0 will monitor the assigned Port pin without disturbing the
peripheral that has been assigned the Port pin via the Crossbar. The Crossbar will not
assign the Port pin to a peripheral if it is configured to skip the selected pin (accomplished by
setting to 1 the corresponding bit in register P0SKIP).
IN0PL: INT0 Polarity
0: INT0 interrupt is active low.
1: INT0 interrupt is active high.
These bits select which Port pin is assigned to INT0. Note that this pin assignment is inde-
pendent of the Crossbar. INT0 will monitor the assigned Port pin without disturbing the
peripheral that has been assigned the Port pin via the Crossbar. The Crossbar will not
assign the Port pin to a peripheral if it is configured to skip the selected pin (accomplished by
setting to 1 the corresponding bit in register P0SKIP).
Note: Available in the C80151F53x/C8051F53xA parts.
Note: Available in the C80151F53x/C8051F53xA parts.
IN1SL2
R/W
Bit6
IN1SL2-0
IN0SL2-0
000
001
010
100
101
000
001
010
100
101
011
110
111
011
110
111
IN1SL1
R/W
Bit5
IN1SL0
R/W
Bit4
INT1 Port Pin
INT0 Port Pin
P0.6*
P0.7*
P0.6*
P0.7*
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
Rev. 1.4
IN0PL
R/W
Bit3
IN0SL2
R/W
Bit2
C8051F52x/F53x
IN0SL1
R/W
Bit1
SFR Address:
IN0SL0
R/W
Bit0
00000001
Reset Value
0xE4
105
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