C8051F226-GQR Silicon Laboratories Inc, C8051F226-GQR Datasheet - Page 50
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C8051F226-GQR
Manufacturer Part Number
C8051F226-GQR
Description
IC 8051 MCU 8K FLASH 48TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F2xxr
Specifications of C8051F226-GQR
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
Data Converters
A/D 32x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-TQFP, 48-VQFP
Processor Series
C8051F2x
Core
8051
Data Bus Width
8 bit
Data Ram Size
1.25 KB
Interface Type
SPI, UART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
32
Number Of Timers
3 bit
Operating Supply Voltage
2.7 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F226DK
Minimum Operating Temperature
- 40 C
On-chip Adc
8 bit, 32 Channel
For Use With
336-1241 - DEV KIT F220/221/226/230/231/236
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F226-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
C8051F2xx
7.
The voltage reference circuit selects between an externally connected reference and the power supply
voltage (V
An external reference can be connected to the VREF pin and selected by setting the REF0CN special
function register per Figure 7.1. The external reference supply must be between V
may also be selected using REF0CN per SFR Definition 7.1. The electrical specifications for the Voltage
Reference are given in Table 7.1.
50
Bits7–2: UNUSED. Read = 00000b; Write = don't care
Bit1–0:
R/W
Bit7
Voltage Reference (C8051F206/220/221/226)
-
Vref (external)
DD
REFSL1– REFSL0: Voltage reference selection.
Bits control which reference is selected.
00: External VREF source is selected.
01: Reserved.
10: Reserved.
11: V
). (See Figure 7.1).
Vdd
R/W
Bit6
Figure 7.1. Voltage Reference Functional Block Diagram
DD
-
selected as VREF source.
SFR Definition 7.1. REF0CN: Reference Control
R/W
Bit5
-
R/W
Bit4
-
Rev. 1.6
R/W
Bit3
-
2
R/W
Bit2
-
REFSL1
Set REF0CN to:
00: Use external Vref
11: Use Vdd
REF0CN[1:0]
R/W
Bit1
DD
REFSL0
R/W
Bit0
– 0.3 V and 1 V. V
To ADC Ref
SFR Address:
Reset Value
00000000
0xD1
DD