C8051F537-ITR Silicon Labs, C8051F537-ITR Datasheet - Page 34
![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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C8051F52x/F53x
Table 2.11. Internal Oscillator Electrical Characteristics
V
34
Oscillator Frequency
Oscillator Supply Current
(from V
Wake-Up Time From Sus-
pend
Power Supply Sensitivity
Temperature Sensitivity
Notes:
DD
1. See Section “11.2.1. VDD Monitor Thresholds and Minimum VDD” on page 108 for minimum V
2. VREGMIN is the minimum output of the voltage regulator for its low setting (REG0CN: REG0MD = 0b). See
3. This is the average frequency across the operating temperature range.
4. See “20.7. Internal Oscillator Suspend Mode” on page 212 for ZTCEN setting in older silicon revisions.
5. Use temperature coefficients
= 1.8 to 2.75 V, –40 to +125 °C unless otherwise specified; Using factory-calibrated settings.
where f0 is the internal oscillator frequency at 25 °C and T0 is 25 °C.
requirements.
Table 2.6, “Voltage Regulator Electrical Specifications,” on page 30.
following equation:
DD
Parameter
)
1
5
f(T) = f0 x (1 + TC
IFCN = 111b
VDD > VREGMIN
IFCN = 111b
VDD < VREGMIN
Oscillator On
OSCICN[7:6] = 11b
Oscillator Suspend
OSCICN[7:6] = 00b
ZTCEN = 1
T = 25 °C
T = 85 °C
T = 125 °C
Oscillator Suspend
OSCICN[7:6] = 00b
ZTCEN = 0
T = 25 °C
T = 85 °C
T = 125 °C
OSCICN[7:6] = 00b
ZTCEN = 0
OSCICN[7:6] = 00b
ZTCEN = 1
Constant Temperature
Constant Supply
TC
TC
1
2
TC
Conditions
1
and
4
TC
2
to calculate the new internal oscillator frequency using the
1
2
2
x (T – T0) + TC
Rev. 1.4
24.5 – 0.5%
24.5 – 1.0%
Min
—
—
—
—
—
—
—
—
—
—
—
—
2
x (T – T0)
–0.65
24.5
24.5
0.10
Typ
800
117
5.0
67
77
50
—
2
3
5
2
3
3
)
24.5 + 0.5%
24.5 + 1.0%
1100
Max
300
—
—
—
—
—
—
—
—
—
1
DD
Instruction
ppm/°C
ppm/°C
Cycles
Units
MHz
%/V
µA
µA
µA
µA
µA
µA
µA
µs
2
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