參數(shù)資料
型號: TMP90CM38
廠商: Toshiba Corporation
元件分類: 通用總線功能
英文描述: High Speed Advanced CMOS 8-bit Microcontroller,Integrating 8-Bit A/D,D/A Converter,RAM,ROM,General Serial Interface,Multifuction Timer/Event Counter,Signal Selector Circuit,PWM Output(高速、先進的 CMOS 8位微控制器(芯片集成了8位A/D,D/A轉(zhuǎn)換器,ROM,RAM,通用串行接口,多功能定時器/事件計數(shù)器,信號選擇電路,PWM輸出))
中文描述: 采用先進的CMOS高速8位微控制器,集成8位A / D,D / A轉(zhuǎn)換,內(nèi)存,光盤,通用串行接口,Multifuction定時器/事件計數(shù)器,信號選擇器電路,PWM輸出(高速,先進的的CMOS 8位微控制器(芯片集成了8位A / D轉(zhuǎn)換,數(shù)/模轉(zhuǎn)換器,ROM和RAM內(nèi)存,通用串行接口,多功能定時器/事件計數(shù)器,信號選擇電路,脈寬調(diào)制輸出))
文件頁數(shù): 110/172頁
文件大小: 5946K
代理商: TMP90CM38
110
TOSHIBA CORPORATION
TMP90CM38
(2)
4 Phase 1-2 Step Excitation
Figures 3.8 (9) shows the output waveforms of 4-phase
1-2 step excitation when channel 0 is selected
.
Figure 3.8 (9). Output Waveforms of 4-Phase 1-2 step Excitation (Normal Rotation and Reverse Rotation)
The initialization for 4-phase 1-2 step excitation is as follows.
By rearranging the initial value “b7 b6 b5 b4 b3 b2 b1 b0”
to “b3 b7 b2 b6 b1 b5 b0 b4”, the consecutive 3 bits are set
to “1” and other bits are set to “0” (positive logic).
For example, if b3, b7 and b2 are set to “1” provided the ini-
tial value becomes “10001100”, obtaining the waveforms as
shown in Figure 3.8 (9).
To get an output waveform of negative logic, set values
1’s and 0’s of the initial value should be inverted. For example,
to change the output waveform shown in Figure 3.8 (9) into
negative logic, change the initial value to “011110011”.
The operation will be explained below for channel 0.
The output latch of M0 (shared by P2) and the shifter alternate
register (SA6) for stepping motor control are shifted at the
rising edge of trigger signal from the timer to be output to the
port. The direction of shift is set by P29FR <CCW0>.
Figure 3.8 (10) shows the block diagram.
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