C8051F330D Silicon Laboratories Inc, C8051F330D Datasheet - Page 113
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C8051F330D
Manufacturer Part Number
C8051F330D
Description
IC 8051 MCU 8K FLASH 20DIP
Manufacturer
Silicon Laboratories Inc
Series
C8051F33xr
Datasheet
1.C8051F330R.pdf
(208 pages)
Specifications of C8051F330D
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
17
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 16x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
336-1155
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14.
Digital and analog resources are available through 17 I/O pins. Port pins are organized as two byte-wide
Ports and one 1-bit Port. Each of the Port pins can be defined as general-purpose I/O (GPIO) or analog
input; Port pins P0.0 - P1.7 can be assigned to one of the internal digital resources as shown in
Figure 14.3. The designer has complete control over which functions are assigned, limited only by the
number of physical I/O pins. This resource assignment flexibility is achieved through the use of a Priority
Crossbar Decoder. Note that the state of a Port I/O pin can always be read in the corresponding Port latch,
regardless of the Crossbar settings.
The Crossbar assigns the selected internal digital resources to the I/O pins based on the Priority Decoder
(Figure 14.3 and Figure 14.4). The registers XBR0 and XBR1, defined in Figure 14.5 and Figure 14.6, are
used to select internal digital functions.
All Port I/Os are 5 V tolerant (refer to Figure 14.2 for the Port cell circuit). The Port I/O cells are configured
as either push-pull or open-drain in the Port Output Mode registers (PnMDOUT, where n = 0,1). Complete
Electrical Specifications for Port I/O are given in Table 14.1 on page 124.
Highest
Priority
Lowest
Priority
Port Input/Output
SYSCLK
Outputs
SMBus
T0, T1
UART
P0
P1
PCA
CP0
SPI
(P0.0-P0.7)
(P1.0-P1.7)
Figure 14.1. Port I/O Functional Block Diagram
2
4
2
2
4
2
8
8
C8051F330/1, C8051F330D
Rev. 1.2
PnSKIP Registers
XBR0, XBR1,
Crossbar
Decoder
Priority
Digital
8
8
PnMDIN Registers
PnMDOUT,
Cells
Cells
I/O
I/O
P0
P1
P0.0
P0.7
P1.0
P1.7
113
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