C8051F930-TB Silicon Laboratories Inc, C8051F930-TB Datasheet - Page 21
![BOARD TARGET/PROTO W/C8051F930](/photos/9/25/92560/c8051f930-tb_sml.jpg)
C8051F930-TB
Manufacturer Part Number
C8051F930-TB
Description
BOARD TARGET/PROTO W/C8051F930
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F930-TB
Contents
Board
Processor To Be Evaluated
C8051F930
Processor Series
C8051F9xx
Data Bus Width
8 bit
Interface Type
I2C, UART, SPI
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
0.9 V to 3.6 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
C8051F930
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1472
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1.1.
1.1.1. Fully 8051 Compatible
The C8051F93x-C8051F92x family utilizes Silicon Labs' proprietary CIP-51 microcontroller core. The CIP-
51 is fully compatible with the MCS-51™ instruction set; standard 803x/805x assemblers and compilers
can be used to develop software. The CIP-51 core offers all the peripherals included with a standard 8052.
1.1.2. Improved Throughput
The CIP-51 employs a pipelined architecture that greatly increases its instruction throughput over the stan-
dard 8051 architecture. In a standard 8051, all instructions except for MUL and DIV take 12 or 24 system
clock cycles to execute with a maximum system clock of 12-to-24 MHz. By contrast, the CIP-51 core exe-
cutes 70% of its instructions in one or two system clock cycles, with only four instructions taking more than
four system clock cycles.
The CIP-51 has a total of 109 instructions. The table below shows the total number of instructions that
require each execution time.
With the CIP-51's maximum system clock at 25 MHz, it has a peak throughput of 25 MIPS.
1.1.3. Additional Features
The C8051F93x-C8051F92x SoC family includes several key enhancements to the CIP-51 core and
peripherals to improve performance and ease of use in end applications.
The extended interrupt handler provides multiple interrupt sources into the CIP-51 allowing numerous ana-
log and digital peripherals to interrupt the controller. An interrupt driven system requires less intervention
by the MCU, giving it more effective throughput. The extra interrupt sources are very useful when building
multi-tasking, real-time systems.
Eight reset sources are available: power-on reset circuitry (POR), an on-chip V
when power supply voltage drops below safe levels), a Watchdog Timer, a Missing Clock Detector,
SmaRTClock oscillator fail or alarm, a voltage level detection from Comparator0, a forced software reset,
an external reset pin, and an illegal Flash access protection circuit. Each reset source except for the POR,
Reset Input Pin, or Flash error may be disabled by the user in software. The WDT may be permanently dis-
abled in software after a power-on reset during MCU initialization.
The internal oscillator factory calibrated to 24.5 MHz and is accurate to ±2% over the full temperature and
supply range. The internal oscillator period can also be adjusted by user firmware. An additional 20 MHz
low power oscillator is also available which facilitates low-power operation. An external oscillator drive cir-
cuit is included, allowing an external crystal, ceramic resonator, capacitor, RC, or CMOS clock source to
generate the system clock. If desired, the system clock source may be switched on-the-fly between both
internal and external oscillator circuits. An external oscillator can also be extremely useful in low power
applications, allowing the MCU to run from a slow (power saving) source, while periodically switching to
the fast (up to 25 MHz) internal oscillator as needed.
1.2.
Digital and analog resources are available through 24 I/O pins (C8051F930/20) or 16 I/O pins
(C8051F931/21). Port pins are organized as three byte-wide ports. Port pins P0.0–P2.6 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
Number of Instructions
Clocks to Execute
CIP-51™ Microcontroller Core
Port Input/Output
26
1
50
2
2/3
Rev. 1.1
5
C8051F93x-C8051F92x
14
3
3/4
7
4
3
DD
4/5
1
monitor (forces reset
5
2
8
1
21
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