C8051F321-GM Silicon Laboratories Inc, C8051F321-GM Datasheet - Page 58

• 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

C8051F320/1
Comparator outputs can be polled in software, used as an interrupt source, and/or routed to a Port pin.
When routed to a Port pin, Comparator outputs are available asynchronous or synchronous to the system
clock; the asynchronous output is available even in STOP mode (with no system clock active). When dis-
abled, the Comparator output (if assigned to a Port I/O pin via the Crossbar) defaults to the logic low state,
and supply current falls to less than 100 nA. See Section “14.1. Priority Crossbar Decoder” on page 128
for details on configuring Comparator outputs via the digital Crossbar. Comparator inputs can be externally
driven from –0.25 V to (V
ifications are given in Table 7.1.
Comparator response time may be configured in software via the CPTnMD registers (see Figure 7.3 and
Figure 7.6). Selecting a longer response time reduces the Comparator supply current. See Table 7.1 for
complete timing and supply current specifications.
58
CMX1N1
CMX1N0
CMX1P1
CMX1P0
Note: P2.6 and P2.7 available
only on C8051F320
P1.2
P1.6
P2.2
P2.6
P1.3
P1.7
P2.3
P2.7
Figure 7.2. Comparator1 Functional Block Diagram
DD
) + 0.25 V without damage or upset. The complete Comparator electrical spec-
CP1HYP1
CP1HYP0
CP1HYN1
CP1HYN0
CP1OUT
CP1RIF
CP1FIF
CP1EN
CP1 +
CP1 -
CP1MD1
CP1MD0
CP1RIE
CP1FIE
Rev. 1.4
+
-
VDD
GND
(SYNCHRONIZER)
D
SET
CLR
Q
Q
D
SET
CLR
Q
Q
Rising-edge
CP1
Crossbar
Interrupt
Logic
Falling-edge
Interrupt
CP1
CP1A
CP1
CP1
CP1RIE
CP1FIE