C8051F321-GM Silicon Laboratories Inc, C8051F321-GM Datasheet - Page 39

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

Specifications of C8051F321-GM

• Program Memory Type: FLASH
• Program Memory Size: 16KB (16K x 8)
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• 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
• 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
• 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
• 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: C8051F320DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 13-ch x 10-bit or 17-ch x 10-bit
• No. Of I/o's: 21
• Ram Memory Size: 1280Byte
• Cpu Speed: 25MHz
• No. Of Timers: 4
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1480 - DAUGHTER CARD TOOLSTCK C8051F321770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1449 - ADAPTER PROGRAM TOOLSTICK F321336-1260 - DEV KIT FOR C8051F320/F321
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1261

5.
The ADC0 subsystem for the C8051F320/1 consists of two analog multiplexers (referred to collectively as AMUX0)
with 17 total input selections, and a 200 ksps, 10-bit successive-approximation-register ADC with integrated track-
and-hold and programmable window detector. The AMUX0, data conversion modes, and window detector are all
configurable under software control via the Special Function Registers shown in Figure 5.1. ADC0 operates in both
Single-ended and Differential modes, and may be configured to measure P1.0-P3.0, the Temperature Sensor output,
or VDD with respect to P1.0-P3.0, VREF, or GND. The ADC0 subsystem is enabled only when the AD0EN bit in the
ADC0 Control register (ADC0CN) is set to logic 1. The ADC0 subsystem is in low power shutdown when this bit is
logic 0.
available on
C8051F320
available on
C8051F320
P2.4-2.7
P2.4-2.7
Sensor
Temp
10-BIT ADC (ADC0)
VREF
GND
P1.0
P1.7
P2.0
P2.7
P3.0
VDD
P1.0
P1.7
P2.0
P2.7
P3.0
19-to-1
19-to-1
AMUX
AMUX
AMX0N
AMX0P
Figure 5.1. ADC0 Functional Block Diagram
Rev. 1.1
(+)
(-)
ADC0CF
ADC
10-Bit
VDD
SAR
ADC0GTH ADC0GTL
ADC0LTH
ADC0CN
ADC0LTL
C8051F320/1
Conversion
Start
000
001
010
011
100
101
32
AD0WINT
Compare
Window
AD0BUSY (W)
Timer 0 Overflow
Timer 2 Overflow
Timer 1 Overflow
CNVSTR Input
Timer 3 Overflow
Logic
39