- 您现在的位置：买卖IC网 > PDF目录97909 > EM73MA89B Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 8-EPSOIC T&R PDF资料下载
参数资料
| 型号： | EM73MA89B |
| 英文描述： | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 8-EPSOIC T&R |
| 中文描述： | 4，液晶产品位微控制器 |
| 文件页数： | 19/64页 |
| 文件大小： | 331K |
| 代理商： | EM73MA89B |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页当前第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页
26
* This specification are subject to be changed without notice.
10.15.2002 (V1.3)
EM73MA89B
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Preliminary
8-BIT BINARY COUNTER
Write the preset value to the registers
The value of 8-bit binary counter can be presetted by P13 and P12. The value of registers can be loaded into
the 8-bit binary counter when the counter starts counting or occurs overflow. When the 8-bit binary counter
overflows, the HTCI interrupt will be generated. If you write values to the registers before the next overflow
occurs, the preset value can be changed.
Read the count value from the registers
The count value of 8-bit binary counter can be read out from P13 and P12. The value is unstable when you
read out the value during counting. Thus, you must disable the counter before reading out the value.
20-BIT COUNTER FUNCTION
The 8-bit binary counter is connected to TCB which is one 12-bit general counter and becomes to the 20-
bit counter. The TCB increases one when the 8-bit binary counter overflows and generats an overflow
interrupt (TRGB) when the TCB overflows. The TRGB cannot be generated when the HTC is in the melody
or disable.
FUNCTION OF HIGH SPEED COUNTER
The HTC has three modes which are RFO mode, melody mode and auto load timer mode.
The HTC is disabled when the CPU is reseted or in the STOP/IDLE operation mode. Users must enable
it by yourself when the CPU is waked up.
Resistor to frequency oscillation mode
In this mode, the HTC is counted by the rising edges of input pulses from P4.1 (CS) and the value of
window gate width is specified by P20. In this case, the window gate width interval is from the time base
output fall to rise and the value of window gate width setting is the same as the time base interrupt frequency.
The time base can be generated a fixed frequency interrupt when the time base interrupt (TBI) is enabled.
The content of the HTC can be read and initialized by the TBI interrupt service routine.
ex. TBI interrupt frequency is LXIN/215 Hz (P25=0101B). The pulse rate of RFO is LXIN/215 Hz
(P20=1111B). The window gate width of RFO is 214/LXIN sec. (LXIN=32KHz)
00
001
Window gate width
TBI interrupt service routine
n+1
00
01
00
01
n
FF
Enable HTC
and write data.
Disable
HTC and
read data.
HTC input pulse
Time base
Program
TCB counter
8-bit binary counter
overflow
相关PDF资料 |
PDF描述 |
|---|---|
| EM78156E | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 14-SOIC |
| EM78458 | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 16-QFN |
| EM78459 | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 14-SOIC |
| EM78450 | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 16-QFN |
| EM78612 | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 16-QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EM73P361A | 制造商:EMC 制造商全称:ELAN Microelectronics Corp 功能描述:4-BIT MICRO-CONTROLLER FOR LCD PRODUCT |
| EM73P361AAQ | 制造商:EMC 制造商全称:ELAN Microelectronics Corp 功能描述:4-BIT MICRO-CONTROLLER FOR LCD PRODUCT |
| EM73P362 | 制造商:EMC 制造商全称:ELAN Microelectronics Corp 功能描述:4-BIT MICRO-CONTROLLER FOR LCD PRODUCT |
| EM73P362BQ | 制造商:EMC 制造商全称:ELAN Microelectronics Corp 功能描述:4-BIT MICRO-CONTROLLER FOR LCD PRODUCT |
| EM73P362CQ | 制造商:EMC 制造商全称:ELAN Microelectronics Corp 功能描述:4-BIT MICRO-CONTROLLER FOR LCD PRODUCT |
发布紧急采购，3分钟左右您将得到回复。