- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385871 > ST7285C (意法半導(dǎo)體) 8-BIT MCU FOR RDS WITH 48K ROM, 3K RAM, ADC, TWO TIMERS, TWO SPIs, I2C AND SCI INTERFACES PDF資料下載
參數(shù)資料
| 型號： | ST7285C |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 8-BIT MCU FOR RDS WITH 48K ROM, 3K RAM, ADC, TWO TIMERS, TWO SPIs, I2C AND SCI INTERFACES |
| 中文描述： | 8位微控制器48,000鐵路發(fā)展策略光盤，3K內(nèi)存，ADC，兩個定時器，2個SPI，I2C和脊髓損傷接口 |
| 文件頁數(shù)： | 78/117頁 |
| 文件大?。?/td> | 748K |
| 代理商： | ST7285C |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁當(dāng)前第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁
78/117
ST7285C
5 SOFTWARE
5.1 ST7 ARCHITECTURE
The 8-bit ST7 Core is designed for high code effi-
ciency. It contains 6 internal registers, 17 main ad-
dressing modes and 63 instructions. The 6 internal
registers include 2 index registers, an accumula-
tor, a 16-bit Program Counter, a stack pointer and
a condition code register. The two Index registers
X and Y enable Indexed Addressing modes with or
without offset, along with read-modify-write type
data
manipulations.
These
branching routines and data modifications.
The 16-bit Program Counter is able to address up
to 64K of ROM/EPROM memory. The 6-bit Stack
Pointer provides access to a 64-level Stack and an
upgrade to an 8-bit Stack Pointer is foreseen in or-
der to be able to manage a 256-level Stack. The
Core also includes a Condition Code Register pro-
viding 5 Condition Flags that indicate the result of
the last instruction executed.
The 17 main Addressing modes, including Indirect
Relative and Indexed addressing, allow sophisti-
cated branching routines or CASE-type functions.
The Indexed Indirect Addressing mode, for in-
stance, permits look-up tables to be located any-
where in the address space, thus enabling very
flexible programming and compact C-based code.
The 63-instruction Instruction Set is 8-bit oriented
with a 2-byte average instruction size. This In-
struction Set offers, in addition to standard data
movement and logic/arithmetic functions, byte
multiplication, bit manipulation, data transfer be-
tween Stack and Accumulator (Push/Pop) with di-
rect stack access, as well as data transfer using
the X and Y registers.
registers
simplify
5.2 ST7 ADDRESSING MODES
The ST7 Core features 17 different addressing
modes which can be classified in 7 main groups:
The ST7 Instruction set is designed to minimize
the number of bytes required per instruction: To do
so, most of the addressing modes may be subdi-
vided in two sub-modes called long and short:
– The long addressing mode is the most powerful
because it can reach any byte in the 64kb ad-
dressing space, but the instruction is bigger and
slower than the short addressing mode.
– The short addressing mode is less powerful be-
cause it can generally only access page zero
(0000 - 00FFh range), but the instruction size is
more compact, and faster. All memory to memo-
ry instructions are only working with short ad-
dressing modes (CLR, CPL,NEG,BSET, BRES,
BTJT, BTJF, INC, DEC, RLC, RRC, SLL, SRL,
SRA, SWAP)
Both modes have pros and cons, but the program-
mer does not need to choosewhich one is the best:
theST7Assemblerwillalwayschoosethebestone.
Addressing Mode
Inherent
Immediate
Direct
Indexed
Indirect
Relative
Bit operation
Example
nop
ld A,#$55
ld A,$55
ld A,($55,X)
ld A,([$55],X)
jrne loop
bset
byte,#5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST72T85A5Q6 | 8-BIT MCU FOR RDS WITH 48K ROM, 3K RAM, ADC, TWO TIMERS, TWO SPIs, I2C AND SCI INTERFACES |
| ST730C08L3 | PHASE CONTROL THYRISTORS |
| ST730C08L3L | PHASE CONTROL THYRISTORS |
| ST730C12L0 | PHASE CONTROL THYRISTORS |
| ST730C12L0L | PHASE CONTROL THYRISTORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST7-28B56 | 功能描述:電源變壓器 SPLIT BOBBIN HORZ MOUNT XFMR RoHS:否 制造商:Triad Magnetics 功率額定值:12 VA 初級電壓額定值:115 V / 230 V 次級電壓額定值:12 V / 24 V 安裝風(fēng)格:SMD/SMT 一次繞組:Dual Primary Winding 二次繞組:Dual Secondary Winding 長度:2.5 in 寬度:2 in 高度:1.062 in |
| ST72A | 制造商:DGS 功能描述: |
| ST72C104G1B6 | 功能描述:8位微控制器 -MCU Flash 4K SPI 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 |
| ST72C104G1M1 | 制造商:STMicroelectronics 功能描述:8-BIT MICROCONTROLLER - Bulk |
| ST72C104G1M6 | 功能描述:8位微控制器 -MCU Flash 4K SPI 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。