数据搜索系统,热门电子元器件搜索 |
|
MV20556 数据表(PDF) 3 Page - Mosel Vitelic, Corp |
|
MV20556 数据表(HTML) 3 Page - Mosel Vitelic, Corp |
3 / 30 page MV20556 MOSEL VITELIC INC. 3/27 PID256** 07/97 Specifications subject to change without notice, contact your sales representatives for the most recent information. Preliminary Pin Descriptions 20L PDIP Pin# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Active L/- L/- I/O i i/o i/o i o i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o Names Reset bit 0 of Port 3 & Receive data bit 1 of Port 3 & Transmit data Crystal out Crystal in bit 2 of Port 3 & low true Interrupt 0 bit 3 of Port 3 & low true Interrupt 1 bit 4 of Port 3 & external input to Timer 0 bit 5 of Port 3 & external input to Timer 1 Sink Voltage, Ground bit 7 of Port 3 bit 0 of Port 1 bit 1 of Port 1 bit 2 of Port 1 bit 3 of Port 1 bit 4 of Port 1 bit 5 of Port 1 bit 6 of Port 1 bit 7 of Port 1 Drive Voltage, +5 Vcc Symbol RES RXD/P3.0 TXD/P3.1 XTAL2 XTAL1 #INT0/P3.2 #INT1/P3.3 T0/P3.4 T1/P3.5 VSS P3.7 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 VDD 20L SOP Pin# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 dice Pad# 4 5 6 7 8 9 10 11 12 13-15 17 18 19 20 21 22 23 24 1 2, 3 Signal Descriptions Vss Circuit ground potential. VDD +5V power supply during operation. PORT 1 Port 1 is an 8-bit quasi-bidirectional I/O port. There is a pull-up resistance when operating at either input or output. PORT 3 Port 3 is an 7-bit quasi-bidirectinal I/O port. It also contains the interrupt and timer as well as serial port pins that are used by various options. The output latch corresponding to a secondary function must be programmed to one (1) for that function to operate. The secondary functions are assigned to the pins of port 3, as follows: - RXD/data (P3.0). Serial port's transmitter data input (asynchronous) or data input/output (asynchronous). - TXD/clock (P3.1). Serial port's transmitter data output (asynchronous) or data input/output (asynchronous). - #INT0 (P3.2). Interrupt 0 input or gate control input for counter 0. - #INT1 (P3.3). Interrupt 1 input or gate control input for counter 1. - T0 (P3.4). Input to counter 0. - T1 (P3.5). Input to counter 1. There is a pull-up resistance when operating at either input or output. RES A low to high transition on this pin (V IH1) while the oscillator is not running resets the MV20556. Holding high signal (higher than V IH1) on this pin for two machine cycles (24 clocks) or longer while the oscillator is running, resets the device. XTAL 1 Input to the oscillator's high gain amplifier. A crystal or external source can be used. XTAL 2 Output from the oscillator's amplifier. Required when a crystal is used. |
类似零件编号 - MV20556 |
|
类似说明 - MV20556 |
|
|
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 |