C8051F902-GM Silicon Laboratories Inc, C8051F902-GM Datasheet - Page 205

• Manufacturer Part Number: C8051F902-GM
• Description: IC MCU 8BIT 8KB FLASH 24QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F9xxr

Specifications of C8051F902-GM

• Program Memory Type: FLASH
• Program Memory Size: 8KB (8K x 8)
• Package / Case: 24-QFN
• 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: 16
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 3.6 V
• Data Converters: A/D 15x10/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F9x
• Core: 8051
• Data Ram Size: 768 B
• Interface Type: UART
• Maximum Clock Frequency: 25 MHz
• Number Of Timers: 4
• Operating Supply Voltage: 0.9 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: C8051F912DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit
• Package: 24QFN EP
• Device Core: 8051
• Family Name: C8051F90x
• Maximum Speed: 25 MHz
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 16
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1848-5

21. Port Input/Output
Digital and analog resources are available through 16 I/O pins. Port pins are organized as three byte-wide
ports. Port pins P0.0–P1.6 can be defined as digital or analog I/O. Digital I/O pins can be assigned to one
of the internal digital resources or used as general purpose I/O (GPIO). Analog I/O pins are used by the
internal analog resources. P2.7 can be used as GPIO and is shared with the C2 Interface Data signal
(C2D). See Section “27. C2 Interface” on page 312 for more details.
The designer has complete control over which digital and analog functions are assigned to individual Port
pins, limited only by the number of physical I/O pins. This resource assignment flexibility is achieved
through the use of a Priority Crossbar Decoder. See Section 21.3 for more information on the Crossbar.
All Port I/Os are 5 V tolerant when used as digital inputs or open-drain outputs. For Port I/Os configured as
push-pull outputs, current is sourced from the VDD/DC+ supply. Port I/Os used for analog functions can
operate up to the VDD/DC+ supply voltage. See Section 21.1 for more information on Port I/O operating
modes and the electrical specifications chapter for detailed electrical specifications.
Highest
Priority
Lowest
Priority
SYSCLK
Outputs
SMBus
T0, T1
UART
P0
P1
P2
SPI0
SPI1
CP0
CP1
PCA
(P0.0-P0.7)
(P1.0-P1.6)
(P2.7)
Figure 21.1. Port I/O Functional Block Diagram
2
4
2
4
7
2
8
7
1
Rev. 1.0
XBR2, PnSKIP
XBR0, XBR1,
Crossbar
Decoder
Registers
Priority
Digital
(ADC0, CP0, and CP1 inputs,
C8051F91x-C8051F90x
To Analog Peripherals
VREF, IREF0, AGND)
8
7
1
P0MASK, P0MAT
P1MASK, P1MAT
Port Match
Cells
Cells
Cell
I/O
I/O
I/O
P0
P1
P2
PnMDIN Registers
External Interrupts
EX0 and EX1
PnMDOUT,
P0.0
P0.7
P1.0
P1.6
P2.7
205