C8051T620/621/320/321/322/323
Full Speed USB EPROM MCU Family
Analog Peripherals
10-Bit ADC
(C8051T620/320/321 only)
High-Speed 8051 µC Core
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Up to 500 ksps
Up to 21 external inputs
VREF from on-chip VREF, external pin, Internal 1.8 V Regulator or V
DD
Internal or external start of conversion source
Built-in temperature sensor
Programmable hysteresis and response time
Configurable as interrupt or reset source
Low current (<0.5 µA)
Pipelined instruction architecture; executes 70% of instructions in 1 or 2
system clocks
Up to 48 MIPS throughput with 48 MHz clock
Expanded interrupt handler
Memory
1280 bytes internal data RAM (256 + 1024)
16 kB byte-programmable EPROM code memory
EPROM can be programmed from firmware running on the device
Comparators
Digital Peripherals
25 Port I/O with high sink current capability
Hardware enhanced SPI™, SMBus™, and two enhanced UART serial
ports
Four general purpose 16-bit counter/timers
16-bit programmable counter array (PCA) with five capture/compare
modules and enhanced PWM functionality
Two internal oscillators:
•
48 MHz: ±0.25% accuracy with clock recovery enabled.
Supports all USB and UART modes
•
80/40/20/10 kHz low frequency, low power
External oscillator: Crystal, RC, C, or CMOS Clock
Can switch between clock sources on-the-fly; useful in power saving
modes
5x5 mm QFN28 or QFN32
LQFP32
USB Function Controller
USB specification 2.0 compliant
Full speed (12 Mbps) or low speed (1.5 Mbps) operation
Integrated clock recovery; no external oscillator required for full speed or
low speed
Supports six flexible endpoints
1 kB USB buffer memory
Integrated transceiver; no external resistors required
Clock Sources
On-Chip Debug
C8051F34A can be used as code development platform; Complete
development kit available
On-chip debug circuitry facilitates full speed, nonintrusive in-system
debug
Provides breakpoints, single stepping, inspect/modify memory and regis-
ters
On-chip LDO for internal core supply
Built-in supply voltage monitor
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Package Options
Supply Voltage: 1.8 to 5.25 V
Temperature Range: –40 to +85 °C
VIO
P0.0
P0.1
P0.2/XTAL1
P0.3/XTAL2
P0.4/TX
P0.5/RX
P0.6/CNVSTR
P0.7/VREF
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5/VPP
P1.6
P1.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P3.0/C2D
Power On
Reset
Reset
CIP-51 8051
Controller Core
16k Byte OTP
Program Memory
256 Byte SRAM
Port I/O Configuration
Digital Peripherals
UART0
UART1
Timers 0,
1, 2, 3
PCA/
WDT
SMBus
Port 0
Drivers
Priority
Crossbar
Decoder
C2CK/RST
Debug /
Programming
Hardware
C2D
In-system
Programming
Hardware
VPP
1024 Byte XRAM
SPI
Peripheral Power
Port 1
Drivers
REGIN
VDD
GND
Voltage
Regulator
Crossbar Control
Regulator
Core Power
SFR
Bus
Port 2
Drivers
System Clock Setup
XTAL1
XTAL2
External Oscillator
Internal Oscillator
Clock
Recovery
Low Freq.
Oscillator
VDD
Analog Peripherals
(C8051T620)
Voltage
Reference
VREF
VDD
VREF
Temp
Sensor
GND
CP0, CP0A
+
-
+
-
Port 3
Drivers
VREF
USB Peripheral
D+
D-
VBUS
Full / Low
Speed
Transceiver
Controller
1k Byte
RAM
10-bit
500ksps
ADC
A
M
U
X
CP1, CP1A
2 Comparators
USB
Copyright © 2011 by Silicon Laboratories
01.21.11
C8051T620/621/320/321/322/323
Full Speed USB EPROM MCU Family
Product Selection Guide
Calibrated Internal 48 MHz Oscillator
USB with 256 Bytes Endpoint RAM
EPROM Code Memory (Bytes)
Programmable Counter Array
Lead-Free (RoHS Compliant)
Y
Y
Y
Y
Y
Y
Internal Voltage Reference
Supply Voltage Regulator
Internal 80 kHz Oscillator
Ordering Part Number
10-Bit 500 ksps ADC
Temperature Sensor
Analog Comparator
Digital Port I/Os
Timers (16-bit)
Enhanced SPI
MIPS (Peak)
RAM (Bytes)
SMBus/I
2
C
C8051T620-GM 48 16k
1
C8051T621-GM 48 16k
1
C8051T320-GQ
2
48 16k
1
C8051T321-GM
3
48 16k
1
C8051T322-GQ
2
48 16k
1
C8051T323-GM
3
48 16k
1
Notes:
1280
1280
1280
1280
1280
1280
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
2
2
2
2
2
2
4
4
4
4
4
4
Y
Y
Y
Y
Y
Y
24
24
25
21
25
21
Y
—
Y
Y
—
—
Y
—
Y
Y
—
—
Y
—
Y
Y
—
—
2
2
2
2
2
2
QFN32
QFN32
LQFP32
QFN28
LQFP32
QFN28
1.
512 bytes reserved for factory use.
2.
Pin compatible with the C8051F320-GM.
3.
Pin compatible with the C8051F321-GM.
Selected Electrical Charasteristics
Parameter
Supply Voltage
SYSCLK
(System Clock)
Specified
Operating Temp
Range
Voltage Regulator (REG0)
Input Voltage
Range
Output
Voltage (V
DD
)
Output Current
ADC-DC Accuracy
Resolution
SAR Conversion
Clock
Throughput
Rate
Voltage Reference
Output Voltage
VREF Short-Cir-
cuit Current
Comparators
Response Time:
Mode 0, Vcm
*
=
1.5 V
CP0+ – CP0– = 100 mV
CP0+ – CP0– = –100 mV
—
—
240
240
—
—
ns
ns
1.2 V setting, 25 °C ambient
2.4 V setting, 25 °C ambient
—
1.1
—
1.2
2.4
4.5
1.3
2.5
6
V
mA
—
—
10
—
—
8
500
bits
MHz
ksps
Output Current=1 to
100 mA
2.7
3.3
—
—
3.45
—
5.25
3.6
100
V
V
mA
Conditions
Regulator1 in Normal Mode
Regulator1 in Bypass Mode
Min
1.8
1.75
0
–40
Typ
3.0
—
—
—
Max
3.6
1.9
48
+85
Units
V
V
MHz
°C
C8051T62x Development Kit
USB
Copyright © 2011 by Silicon Laboratories
Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc.
Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders
01.21.11
Package
UARTs
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