C8051F321 Silicon Laboratories Inc, C8051F321 Datasheet - Page 31

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

Specifications of C8051F321

• 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
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

4.
XTAL1
XTAL2
REGIN
VBUS
Name
C2CK
/RST/
VDD
GND
P3.0/
P0.2/
P0.3/
C2D
P0.0
P0.1
P0.4
P0.5
D+
D-
PINOUT AND PACKAGE DEFINITIONS
‘F320
Pin Numbers
10
32
31
30
29
6
3
9
7
8
4
5
2
1
Table 4.1. Pin Definitions for the C8051F320/1
‘F321
10
28
27
26
25
6
3
9
7
8
4
5
2
1
Power In
Power In 5 V Regulator Input. This pin is the input to the on-chip voltage
A I/O or
Power
D I/O
D I/O
D I/O
D I/O
D I/O
D I/O
D I/O
D I/O
D I/O
D I/O
D I/O
D I/O
Type
D In
A In
D In
Out
Description
2.7-3.6 V Power Supply Voltage Input.
3.3 V Voltage Regulator Output. See
Ground.
Device Reset. Open-drain output of internal POR or VDD moni-
tor. An external source can initiate a system reset by driving this
pin low for at least 15 µs. See
Clock signal for the C2 Debug Interface.
Port 3.0. See
Bi-directional data signal for the C2 Debug Interface.
regulator.
VBUS Sense Input. This pin should be connected to the VBUS
signal of a USB network. A 5 V signal on this pin indicates a USB
network connection.
USB D+.
USB D-.
Port 0.0. See
Port 0.1. See
Port 0.2. See
External Clock Input. This pin is the external oscillator return for
a crystal or resonator. See
Port 0.3. See
External Clock Output. This pin is the excitation driver for an
external crystal or resonator, or an external clock input for CMOS,
capacitor, or RC oscillator configurations. See
Port 0.4. See
Port 0.5. See
Rev. 1.1
Section 14
Section 14
Section 14
Section 14
Section 14
Section 14
Section 14
for a complete description.
for a complete description.
for a complete description.
for a complete description.
for a complete description.
for a complete description.
for a complete description.
Section
Section
13.
Section
C8051F320/1
10.
8.
Section
13.
31