C8051F007 Silicon Laboratories Inc, C8051F007 Datasheet - Page 16

• Manufacturer Part Number: C8051F007
• Description: IC 8051 MCU 32K FLASH 32LQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F00xr

Specifications of C8051F007

• 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: 8
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.25K 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: -

1.4.
The standard 8051 Ports (0, 1, 2, and 3) are available on the MCUs. All four ports are pinned out on the
F000/05/10/15. Ports 0 and 1 are pinned out on the F001/06/11/16, and only Port 0 is pinned out on the
F002/07/12/17. The Ports not pinned out are still available for software use as general purpose registers. The Port
I/O behave like the standard 8051 with a few enhancements.
Each Port I/O pin can be configured as either a push-pull or open-drain output. Also, the “weak pull-ups” which are
normally fixed on an 8051 can be globally disabled, providing additional power saving capabilities for low power
applications.
Perhaps the most unique enhancement is the Digital Crossbar. This is essentially a large digital switching network
that allows mapping of internal digital system resources to Port I/O pins on P0, P1, and P2. (See Figure 1.8.)
Unlike microcontrollers with standard multiplexed digital I/O, all combinations of functions are supported.
The on-board counter/timers, serial buses, HW interrupts, ADC Start of Conversion input, comparator outputs, and
other digital signals in the controller can be configured to appear on the Port I/O pins specified in the Crossbar
Control registers. This allows the user to select the exact mix of general purpose Port I/O and digital resources
needed for his particular application.
Programmable Digital I/O and Crossbar
Highest
Priority
Lowest
Priority
Latches
Port
SYSCLK
CNVSTR
Comptr.
Outputs
SMBus
T0, T1,
UART
P0
P1
P2
P3
PCA
SPI
Figure 1.8. Digital Crossbar Diagram
T2
(P0.0-P0.7)
(P1.0-P1.7)
(P2.0-P2.7)
(P3.0-P3.7)
8
8
8
8
2
4
2
6
2
6
Rev. 1.7
XBR2 Registers
XBR0, XBR1,
Crossbar
Decoder
Priority
Digital
8
8
8
PRT0CF, PRT1CF,
PRT2CF Registers
PRT3CF
Register
Cells
Cells
Cells
Cells
P0
I/O
P1
I/O
P2
I/O
P3
I/O
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
External
Pins
P0.0
P0.7
P1.0
P1.7
P2.0
P2.7
P3.0
P3.7
Highest
Priority
Lowest
Priority
16