C8051F988-GM Silicon Laboratories Inc, C8051F988-GM Datasheet - Page 119
![IC MCU 8BIT 4KB FLASH 24QFN](/photos/12/15/121587/c8051f9xx_24-qfn_sml.jpg)
C8051F988-GM
Manufacturer Part Number
C8051F988-GM
Description
IC MCU 8BIT 4KB FLASH 24QFN
Manufacturer
Silicon Laboratories Inc
Series
C8051F9xxr
Specifications of C8051F988-GM
Program Memory Type
FLASH
Program Memory Size
4KB (4K x 8)
Package / Case
24-UQFN Exposed Pad, 24-HUQFN
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
17
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F9x
Core
8051
Data Ram Size
512 B
Interface Type
I2C, SMBus, Enhanced UART, Enhanced SPI
Maximum Clock Frequency
7 KHz
Number Of Programmable I/os
17
Number Of Timers
4
Operating Supply Voltage
2.4 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F996DK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 10 Channel
On-chip Dac
10 bit, 4 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1959-5
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With the CIP-51's maximum system clock at 25 MHz, it has a peak throughput of 25 MIPS. The CIP-51 has
a total of 109 instructions. The table below shows the total number of instructions that require each
execution time.
9.2.
In-system programming of the Flash program memory and communication with on-chip debug support
logic is accomplished via the Silicon Labs 2-Wire Development Interface (C2).
The on-chip debug support logic facilitates full speed in-circuit debugging, allowing the setting of hardware
breakpoints, starting, stopping and single stepping through program execution (including interrupt service
routines), examination of the program's call stack, and reading/writing the contents of registers and
memory. This method of on-chip debugging is completely non-intrusive, requiring no RAM, Stack, timers,
or other on-chip resources. C2 details can be found in Section “27. C2 Interface” on page 317.
The CIP-51 is supported by development tools from Silicon Labs and third party vendors. Silicon Labs
provides an integrated development environment (IDE) including editor, debugger and programmer. The
IDE's debugger and programmer interface to the CIP-51 via the C2 interface to provide fast and efficient
in-system device programming and debugging. Third party macro assemblers and C compilers are also
available.
9.3.
The instruction set of the CIP-51 System Controller is fully compatible with the standard MCS-51™
instruction set. Standard 8051 development tools can be used to develop software for the CIP-51. All CIP-
51 instructions are the binary and functional equivalent of their MCS-51™ counterparts, including opcodes,
addressing modes and effect on PSW flags. However, instruction timing is different than that of the
standard 8051.
9.3.1. Instruction and CPU Timing
In many 8051 implementations, a distinction is made between machine cycles and clock cycles, with
machine cycles varying from 2 to 12 clock cycles in length. However, the CIP-51 implementation is based
solely on clock cycle timing. All instruction timings are specified in terms of clock cycles.
Due to the pipelined architecture of the CIP-51, most instructions execute in the same number of clock
cycles as there are program bytes in the instruction. Conditional branch instructions take one less clock
cycle to complete when the branch is not taken as opposed to when the branch is taken. Table 9.1 is the
CIP-51 Instruction Set Summary, which includes the mnemonic, number of bytes, and number of clock
cycles for each instruction.
Number of Instructions
Clocks to Execute
Programming and Debugging Support
Instruction Set
26
1
50
2
2/3
Rev. 1.0
5
C8051F99x-C8051F98x
14
3
3/4
7
4
3
4/5
1
5
2
8
1
119
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