C8051F002R Silicon Laboratories Inc, C8051F002R Datasheet - Page 156
C8051F002R
Manufacturer Part Number
C8051F002R
Description
IC 8051 MCU 32K FLASH 32LQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F00xr
Specifications of C8051F002R
Core Processor
8051
Core Size
8-Bit
Speed
20MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
8
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 4x12b; D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
336-1002-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F002R
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
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20.1.1. Edge-triggered Capture Mode
In this mode, a valid transition on the CEXn pin causes the PCA to capture the value of the PCA counter/timer and
load it into the corresponding module’s 16-bit capture/compare register (PCA0CPLn and PCA0CPHn). The CAPPn
and CAPNn bits in the PCA0CPMn register are used to select the type of transition that triggers the capture: low-to-
high transition (positive edge), high-to-low transition (negative edge), or either transition (positive or negative
edge). When a capture occurs, the Capture/Compare Flag (CCFn) in PCA0CN is set to logic 1 and an interrupt
request is generated if CCF interrupts are enabled. The CCFn bit is not automatically cleared by hardware when the
CPU vectors to the interrupt service routine, and must be cleared by software.
Port I/O
Crossbar
Figure 20.3. PCA Capture Mode Diagram
CEXn
PCA0CPMn
E
C
O
M
n
0
Rev. 1.7
C
A
P
P
n
C
N
A
P
n
0
1
M
A
T
n
0 0 0
O
G
T
n
W
M
P
n
E
C
C
F
n
0
1
C
F
C
R
PCA0CN
C
C
F
4
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
C
C
F
3
PCA
Timebase
C
C
F
2
C
C
F
1
PCA Interrupt
C
C
F
0
Capture
PCA0CPLn
PCA0L
PCA0CPHn
PCA0H
156
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