C8051F023R Silicon Laboratories Inc, C8051F023R Datasheet - Page 252

• Manufacturer Part Number: C8051F023R
• Description: IC 8051 MCU 64K FLASH 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F02xr

Specifications of C8051F023R

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 32
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x8b, 8x10b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: 336-1035-2

C8051F020/1/2/3
23.2. Capture/Compare Modules
Each module can be configured to operate independently in one of six operation modes: Edge-triggered Capture,
Software Timer, High Speed Output, Frequency Output, 8-Bit Pulse Width Modulator, or 16-Bit Pulse Width Modu-
lator. Each module has Special Function Registers (SFRs) associated with it in the CIP-51 system controller. These
registers are used to exchange data with a module and configure the module's mode of operation.
Table 23.2 summarizes the bit settings in the PCA0CPMn registers used to select the PCA0 capture/compare mod-
ule’s operating modes. Setting the ECCFn bit in a PCA0CPMn register enables the module's CCFn interrupt. Note:
PCA0 interrupts must be globally enabled before individual CCFn interrupts are recognized. PCA0 interrupts are
globally enabled by setting the EA bit (IE.7) and the EPCA0 bit (EIE1.3) to logic 1. See Figure 23.3 for details on the
PCA interrupt configuration.
252
PWM16 ECOM CAPP CAPN
Timer Overflow
PCA Counter/
X
X
X
X
X
X
0
1
W
P
M
1
6
n
PCA Module 0
PCA Module 1
PCA Module 2
PCA Module 3
PCA Module 4
Table 23.2. PCA0CPM Register Settings for PCA Capture/Compare Modules
(for n = 0 to 4)
PCA0CPMn
O
M
E
C
n
C
A
P
P
(CCF0)
(CCF1)
(CCF2)
(CCF3)
(CCF4)
n
C
N
A
P
n
X = Don’t Care
M
A
T
n
O
G
T
n
X
X
X
1
1
1
1
1
W
P
M
n
E
C
C
F
n
C
F
C
R
PCA0CN
1
0
1
0
0
0
0
0
C
C
F
4
C
C
F
3
C
C
F
2
C
C
F
1
Figure 23.3. PCA Interrupt Block Diagram
C
C
F
0
ECCF0
ECCF1
ECCF2
ECCF3
ECCF4
0
1
1
0
0
0
0
0
C
D
L
I
PCA0MD
C
P
S
2
MAT
C
P
S
1
X
X
X
0
1
0
1
0
1
0
1
0
1
0
0
0
1
1
C
P
S
0
C
E
F
0
1
TOG
0
0
0
0
1
1
0
0
Rev. 1.4
PWM ECCF Operation Mode
0
0
0
0
0
1
1
1
X
X
X
X
X
X
X
X
Capture triggered by negative edge on
Capture triggered by positive edge on
Capture triggered by transition on
16-Bit Pulse Width Modulator
8-Bit Pulse Width Modulator
(EIE1.3)
EPCA0
High Speed Output
Frequency Output
Software Timer
0
1
CEXn
CEXn
CEXn
(IE.7)
EA
0
1
Interrupt
Priority
Decoder