C8051F34B-GM Silicon Laboratories Inc, C8051F34B-GM Datasheet - Page 255
![IC 8051 MCU 32K FLASH MEM 32-QFN](/photos/12/27/122778/c8051f34b-gm_sml.jpg)
C8051F34B-GM
Manufacturer Part Number
C8051F34B-GM
Description
IC 8051 MCU 32K FLASH MEM 32-QFN
Manufacturer
Silicon Laboratories Inc
Series
C8051F34xr
Datasheet
1.C8051F349-GQ.pdf
(276 pages)
Specifications of C8051F34B-GM
Program Memory Type
FLASH
Program Memory Size
32KB (32K x 8)
Package / Case
32-QFN
Core Processor
8051
Core Size
8-Bit
Speed
48MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
25
Ram Size
2.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 17x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F3x
Core
8051
Data Bus Width
8 bit
Data Ram Size
2304 B
Interface Type
I2C, SPI, UART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
25
Number Of Timers
4
Operating Supply Voltage
2.7 V to 5.25 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
KSK-SL-F34X, KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F340DK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
336-1748 - ADAPTER TOOLSTICK FOR C8051F34X
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1351-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F34B-GM
Manufacturer:
Silicon Labs
Quantity:
135
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22. Programmable Counter Array (PCA0)
The Programmable Counter Array (PCA0) 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
Crossbar Decoder” on page 144
a programmable timebase that can select between six sources: system clock, system clock divided by four,
system clock divided by twelve, the external oscillator clock source divided by 8, Timer 0 overflow, or an
external clock signal on the ECI input pin. Each capture/compare module may be configured to operate
independently in one of six modes: Edge-Triggered Capture, Software Timer, High-Speed Output, Fre-
quency Output, 8-Bit PWM, or 16-Bit PWM (each mode is described in
Modules” on page 257
allowing the PCA to be clocked by a precision external oscillator while the internal oscillator drives the sys-
tem clock. The PCA is configured and controlled through the system controller's Special Function Regis-
ters. The PCA block diagram is shown in Figure 22.1
Important Note: The PCA Module 4 may be used as a watchdog timer (WDT), and is enabled in this mode
following a system reset. Access to certain PCA registers is restricted while WDT mode is enabled. See
Section 22.3
for details.
Capture/Compare
Module 0
SYSCLK/12
Timer 0 Overflow
SYSCLK
External Clock/8
SYSCLK/4
ECI
). The external oscillator clock option is ideal for real-time clock (RTC) functionality,
C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
Figure 22.1. PCA Block Diagram
Capture/Compare
for details on configuring the Crossbar). The counter/timer is driven by
Module 1
CLOCK
MUX
PCA
Crossbar
16-Bit Counter/Timer
Port I/O
Rev. 1.3
Capture/Compare
Module 2
Capture/Compare
Section “22.2. Capture/Compare
Module 3
Section “15.1. Priority
Capture/Compare
Module 4 / WDT
255
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