參數(shù)資料
型號： COP8CDR9HLQ8
廠商： National Semiconductor
文件頁數(shù)： 105/111頁
文件大?。?/td> 0K
描述： IC MCU FLASH 8BIT 32K A/D 44LLP
標(biāo)準(zhǔn)包裝： 2,500
系列： COP8™ 8C
核心處理器： COP8
芯體尺寸： 8-位
速度： 20MHz
連通性： Microwire/Plus（SPI），UART/USART
外圍設(shè)備： POR，PWM，WDT
輸入/輸出數(shù)： 37
程序存儲器容量： 32KB（32K x 8）
程序存儲器類型： 閃存
RAM 容量： 1K x 8
電壓 - 電源 (Vcc/Vdd)： 2.7 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 16x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 44-WFQFN 裸露焊盤
包裝： 帶卷 (TR)
其它名稱： COP8CDR9HLQ8TR
SNOS535I – OCTOBER 2000 – REVISED MARCH 2013
A change in program flow requires a non-incremental change in the Program Counter contents. The
Program Counter consists of two bytes, designated the upper byte (PCU) and lower byte (PCL). The most
significant bit of PCU is not used, leaving 15 bits to address the program memory.
Different addressing modes are used to specify the new address for the Program Counter. The choice of
addressing mode depends primarily on the distance of the jump. Farther jumps sometimes require more
instruction bytes in order to completely specify the new Program Counter contents.
The available transfer-of-control addressing modes are:
Jump Relative
Jump Absolute
Jump Absolute Long
Jump Indirect
The transfer-of-control addressing modes are described below. Each description includes an example of a
Jump instruction using a particular addressing mode, and the effect on the Program Counter bytes of
executing that instruction.
Jump Relative. In this 1-byte instruction, six bits of the instruction opcode specify the distance of the jump
from the current program memory location. The distance of the jump can range from
31 to +32. A JP+1
instruction is not allowed. The programmer should use a NOP instead.
Example:
Jump Relative
JP 0A
Contents
Reg
Before
After
PCU
02 Hex
PCL
05 Hex
0F Hex
Jump Absolute. In this 2-byte instruction, 12 bits of the instruction opcode specify the new contents of the
Program Counter. The upper three bits of the Program Counter remain unchanged, restricting the new
Program Counter address to the same 4-kbyte address space as the current instruction. (This restriction is
relevant only in devices using more than one 4-kbyte program memory space.)
Example:
Jump Absolute
JMP 0125
Contents
Reg
Before
After
PCU
0C Hex
01 Hex
PCL
77 Hex
25 Hex
Jump Absolute Long. In this 3-byte instruction, 15 bits of the instruction opcode specify the new contents
of the Program Counter.
Example:
Jump Absolute Long
JMP 03625
Reg/
Contents
Memory
Before
After
PCU
42 Hex
36 Hex
PCL
36 Hex
25 Hex
Copyright 2000–2013, Texas Instruments Incorporated
Functional Description
93
Product Folder Links: COP8CBR9 COP8CCR9 COP8CDR9
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COP8CDR9HVA8 功能描述:8位微控制器 -MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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