C8051F321 Silicon Laboratories Inc, C8051F321 Datasheet - Page 31
C8051F321
Manufacturer Part Number
C8051F321
Description
IC 8051 MCU 16K FLASH 28MLP
Manufacturer
Silicon Laboratories Inc
Series
C8051F32xr
Datasheet
1.C8051F320R.pdf
(256 pages)
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
-
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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
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