C8051F537-ITR Silicon Labs, C8051F537-ITR Datasheet - Page 137
![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 14.1. OSCICN: Internal Oscillator Control
Bits7–6: IOSCEN[1:0]: Internal Oscillator Enable Bits.
Bit5:
Bit4:
Bit3:
Bits2–0: IFCN2–0: Internal Oscillator Frequency Control Bits.
IOSCEN1 IOSCEN0 SUSPEND
R/W
Bit7
00: Oscillator Disabled.
01: Reserved.
10: Reserved.
11: Oscillator Enabled in Normal Mode and Disabled in Suspend Mode.
SUSPEND: Internal Oscillator Suspend Enable Bit.
Setting this bit to logic 1 places the internal oscillator in SUSPEND mode. The internal oscil-
lator resumes operation when one of the SUSPEND mode awakening events occur.
IFRDY: Internal Oscillator Frequency Ready Flag.
0: Internal Oscillator is not running at programmed frequency.
1: Internal Oscillator is running at programmed frequency.
UNUSED. Read = 0b, Write = don't care.
000: SYSCLK derived from Internal Oscillator divided by 128 (default).
001: SYSCLK derived from Internal Oscillator divided by 64.
010: SYSCLK derived from Internal Oscillator divided by 32.
011: SYSCLK derived from Internal Oscillator divided by 16.
100: SYSCLK derived from Internal Oscillator divided by 8.
101: SYSCLK derived from Internal Oscillator divided by 4.
110: SYSCLK derived from Internal Oscillator divided by 2.
111: SYSCLK derived from Internal Oscillator divided by 1.
R/W
Bit6
R/W
Bit5
IFRDY
Bit4
R
Rev. 1.4
Bit3
—
R
IFCN2
R/W
Bit2
C8051F52x/F53x
IFCN1
R/W
Bit1
SFR Address:
IFCN0
R/W
Bit0
11000000
Reset Value
0xB2
137
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