C8051F018-GQ Silicon Laboratories Inc, C8051F018-GQ Datasheet - Page 137

• Manufacturer Part Number: C8051F018-GQ
• Description: IC 8051 MCU 16K FLASH 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F018r

Specifications of C8051F018-GQ

• Program Memory Type: FLASH
• Program Memory Size: 16KB (16K x 8)
• Package / Case: 64-TQFP, 64-VQFP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 32
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.8 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F0x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 1.25 KB
• Interface Type: I2C/SMBus/SPI/UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 4
• Operating Supply Voltage: 2.8 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: C8051F005DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1197

18. PROGRAMMABLE COUNTER ARRAY
The Programmable Counter Array (PCA) provides enhanced timer functionality while requiring less CPU
intervention than the standard 8051 counter/timers. The PCA consists of a dedicated 16-bit counter/timer and five
16-bit capture/compare modules. Each capture/compare module has its own associated I/O line (CEXn) which is
routed through the Crossbar to Port I/O when enabled (see Section 13.1 for details on configuring the Crossbar).
The counter/timer is driven by a configurable timebase that can select between four inputs as its source: system
clock divided by twelve, system clock divided by four, Timer 0 overflow, or an external clock signal on the ECI
line. The PCA is configured and controlled through the system controller’s Special Function Registers. The basic
PCA block diagram is shown in Figure 18.1.
137
C8051F018
C8051F019
T0 Overflow
System
Clock
Capture/Compare
Module 0
/12
/4
CPS=11
10
01
Capture/Compare
00
Figure 18.1. PCA Block Diagram
Module 1
Crossbar
16-Bit Counter/Timer
Rev. 1.2
Port I/O
Capture/Compare
Module 2
Capture/Compare
Module 3
Capture/Compare
Module 4