数据搜索系统,热门电子元器件搜索 |
|
EM78P343NM 数据表(PDF) 66 Page - ELAN Microelectronics Corp |
|
EM78P343NM 数据表(HTML) 66 Page - ELAN Microelectronics Corp |
66 / 102 page EM78P341N/342N/343N 8-Bit Microprocessor with OTP ROM 60 • Product Specification (V1.0) 12.01.2006 (This specification is subject to change without further notice) 6.8 Infrared Remote Control Application/PWM Waveform Generation 6.8.1 Overview This LSI can easily output infrared carrier or PWM standard waveform. As illustrated below, the IR and PWM waveform generation function include an 8-bit down count timer/counter, high-time, low-time, and IR control register. The IROUT pin waveform is determined by IOCA0 (IR and TCCC scale control register), IOCB1 (high-time rate, low-time rate control register), IOC81 (TCCC counter), IOCA1 (high-time register), and IOC91 (low-time register). H/W Modulator 8 HF IROUT IR Fcarrier FT:CLK(Fosc) LG 8 Bit counter 8-to-1 MUX 8bit binary down counter Auto-reload buffer (TCCC)(IOC81) 8 Bit counter 8-to-1 MUX 8 Bit counter 8-to-1 MUX 8bit binary down counter 8bit binary down counter Auto-reload buffer (High-time)(IOCA1) Auto-reload buffer (Low-time)(IOC91) 8 8 Scale (IOCB1) Scale (IOCB1) Scale (IOCA0) 8 8 Underflow Interrupt HPWTIF LPWTIF Fig. 6-12 IR/PWM System Block Diagram NOTE Details of the Fcarrier high time width and low time width are explained below: Fcarrier = FT/ 2 { [1+decimal TCCC Counter value (IOC81)] * TCCC Scale(IOCA0) } High time width = { [1+decimal high-time value (IOCA1)] * High time Scale(IOCB1) } / FT Low time width = { [1+decimal low-time value (IOC91)] * Low time Scale(IOCB1) } / FT Where FT is the system clock FT=Fosc/1(CLK=2) FT=Fosc/2(CLK=4) When an interrupt is generated by the High time down counter underflow (when enabled), the next instruction will be fetched from Address 018 and 01BH (High time and Low time respectively). |
类似零件编号 - EM78P343NM |
|
类似说明 - EM78P343NM |
|
|
链接网址 |
隐私政策 |
ALLDATASHEETCN.COM |
ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |