C8051F321-GMR Silicon Laboratories Inc, C8051F321-GMR Datasheet - Page 56

• Manufacturer Part Number: C8051F321-GMR
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F321-GMR

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 21
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 2.25 KB
• Interface Type: I2C, SMBus, SPI, UART, USB
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F320DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 13 Channel / 10 bit, 7 Channel
• Package: 28MLP
• Device Core: 8051
• Family Name: C8051F321
• Maximum Speed: 25 MHz
• Operating Supply Voltage: 3.3 V
• For Use With: 336-1480 - DAUGHTER CARD TOOLSTCK C8051F321336-1449 - ADAPTER PROGRAM TOOLSTICK F321336-1260 - DEV KIT FOR C8051F320/F321
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

C8051F320/1
Table 6.1. Voltage Reference Electrical Characteristics
V
56
Internal Reference (REFBE = 1)
Output Voltage
VREF Short-Circuit Current
VREF Temperature Coeffi-
cient
Load Regulation
VREF Turn-on Time 1
VREF Turn-on Time 2
VREF Turn-on Time 3
Power Supply Rejection
External Reference (REFBE = 0)
Input Voltage Range
Input Current
Bias Generators
ADC Bias Generator
Reference Bias Generator
DD
Bits7–3: UNUSED. Read = 00000b; Write = don’t care.
Bit3:
Bit2:
Bit1:
Bit0:
= 3.0 V; –40 to +85 °C unless otherwise specified.
R/W
Bit7
-
Parameter
REFSL: Voltage Reference Select.
This bit selects the source for the internal voltage reference.
0: VREF pin used as voltage reference.
1: VDD used as voltage reference.
TEMPE: Temperature Sensor Enable Bit.
0: Internal Temperature Sensor off.
1: Internal Temperature Sensor on.
BIASE: Internal Analog Bias Generator Enable Bit.
0: Internal Bias Generator off.
1: Internal Bias Generator on.
REFBE: Internal Reference Buffer Enable Bit.
0: Internal Reference Buffer disabled.
1: Internal Reference Buffer enabled. Internal voltage reference driven on the VREF pin.
R/W
Bit6
-
SFR Definition 6.1.
R/W
Bit5
-
4.7 µF tantalum, 0.1 µF ceramic bypass
Sample Rate = 200 ksps; VREF = 3.0 V
Load = 0 to 200 µA to GND
0.1 µF ceramic bypass
R/W
Bit4
-
no bypass cap
25 °C ambient
Conditions
BIASE = ‘1’
REF0CN: Reference Control
Rev. 1.4
REFSL
R/W
Bit3
TEMPE
R/W
Bit2
BIASE
2.38
Min
R/W
Bit1
0
2.44
Typ
140
106
1.5
15
20
10
12
42
REFBE
2
R/W
Bit0
VDD
Max
2.50
148
10
60
SFR Address:
00000000
Reset Value
0xD1
ppm/°C
ppm/µA
ppm/V
Units
mA
ms
µA
µA
µA
µs
µs
V
V