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| 型號： | TS87C52X2-MIKB |
| 英文描述： | RCD, 100A 4 POLERCD, 100A 4 POLE; Current rating:100A; Current, tripping:30mA; Poles, No. of:4 |
| 中文描述： | 8位CMOS微控制器0-60兆赫 |
| 文件頁數(shù)： | 7/54頁 |
| 文件大?。?/td> | 626K |
| 代理商： | TS87C52X2-MIKB |
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Rev. B - Jan. 25, 1999
7
Preliminary
TS80C52X2
6. TS80C52X2 Enhanced Features
In comparison to the original 80C52, the TS80C52X2 implements some new features, which are
:
The X2 option.
The Dual Data Pointer.
The 4 level interrupt priority system.
The power-off flag.
The ONCE mode.
The ALE disabling.
Some enhanced features are also located in the UART and the timer 2.
6.1 X2 Feature
The TS80C52X2 core needs only 6 clock periods per machine cycle. This feature called ”X2” provides the following
advantages:
G
Divide frequency crystals by 2 (cheaper crystals) while keeping same CPU power.
G
Save power consumption while keeping same CPU power (oscillator power saving).
G
Save power consumption by dividing dynamically operating frequency by 2 in operating and idle modes.
G
Increase CPU power by 2 while keeping same crystal frequency.
In order to keep the original C51 compatibility, a divider by 2 is inserted between the XTAL1 signal and the main
clock input of the core (phase generator). This divider may be disabled by software.
6.1.1 Description
The clock for the whole circuit and peripheral is first divided by two before being used by the CPU core and
peripherals. This allows any cyclic ratio to be accepted on XTAL1 input. In X2 mode, as this divider is bypassed,
the signals on XTAL1 must have a cyclic ratio between 40 to 60%. Figure 1. shows the clock generation block
diagram. X2 bit is validated on XTAL1
÷
2 rising edge to avoid glitches when switching from X2 to STD mode.
Figure 2. shows the mode switching waveforms.
Figure 1. Clock Generation Diagram
XTAL1
2
CKCON reg
X2
state machine: 6 clock cycles.
CPU control
F
OSC
F
XTAL
0
1
XTAL1:2
相關PDF資料 |
PDF描述 |
|---|---|
| TS87C52X2-MIKD | RCBO, SP, 10A, 0.1A, TYPE-C; Current rating:10A; Sensitivity:100 mA; Tripping characteristic:Type C RoHS Compliant: Yes |
| TS87C52X2-MIKR | 8-bit CMOS Microcontroller 0-60 MHz |
| TS87C52X2-MIJB | 8-bit CMOS Microcontroller 0-60 MHz |
| TS87C52X2-MIJD | 8-bit CMOS Microcontroller 0-60 MHz |
| TS87C52X2-MIJR | 8-bit CMOS Microcontroller 0-60 MHz |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TS87C52X2-MIKD | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS87C52X2-MIKR | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS87C52X2-SLSUM | 制造商:Atmel Corporation 功能描述:MCU 8BIT TS87 CISC 8KB EPROM 44PLCC - Rail/Tube |
| TS87C52X2-VCA | 功能描述:IC MCU 8BIT 8K OTP 40MHZ 40-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:87C 標準包裝:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設備:POR，WDT 輸入/輸出數(shù):32 程序存儲器容量:32KB（32K x 8） 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉換器:- 振蕩器型:內部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP（0.600"，15.24mm） 包裝:管件 |
| TS87C52X2-VCAB | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
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