Electronic Components Datasheet Search |
|
DS2251T-32-16 Datasheet(PDF) 4 Page - Dallas Semiconductor |
|
DS2251T-32-16 Datasheet(HTML) 4 Page - Dallas Semiconductor |
4 / 22 page DS2251T 4 of 22 PIN ASSIGNMENT PIN NAME PIN NAME PIN NAME PIN NAME 1 P1.0 19 XTAL2 37 P0.2 55 INTB 2 P1.1 20 GND 38 P0.1 56 BD0 3 P1.2 21 P2.0 39 P0.0 57 BD1 4 P1.3 22 P2.1 40 VCC 58 BD2 5 P1.4 23 P2.2 41 BA0 59 BD3 6 P1.5 24 P2.3 42 BA1 60 BD4 7 P1.6 25 P2.4 43 BA2 61 BD5 8 P1.7 26 P2.5 44 BA3 62 BD6 9 RST 27 P2.6 45 BA4 63 BD7 10 P3.0/RXD 28 P2.7 46 BA5 64 R/ W 11 P3.1/TXD 29 PSEN 47 BA6 65 PF 12 P3.2/ INT0 30 ALE 48 BA7 66 PE3 13 P3.3/ INT1 31 PROG 49 BA8 67 PE4 14 P3.4/T0 32 P0.7 50 BA9 68 INTP 15 P3.5/T1 33 P0.6 51 BA10 69 INTA 16 P3.6/ WR 34 P0.5 52 BA11 70 SQW 17 P3.7/ RD 35 P0.4 53 BA12 71 VRST 18 XTAL1 36 P0.3 54 BA13 72 BA15 PIN DESCRIPTION PIN DESCRIPTION 39–32 P0.0–P0.7. General-purpose I/O Port 0. This port is open-drain and cannot drive a logic 1. It requires external pullups. Port 0 is also the multiplexed Expanded Address/Data bus. When used in this mode, it does not require pullups. 1–8 P1.0–P1.7. General-purpose I/O Port 1. 21–28 P2.0–P2.7. General-purpose I/O Port 2. Also serves as the MSB of the Expanded Address bus. 10 P3.0/RXD. General-purpose I/O port pin 3.0. Also serves as the receive signal for the on- board UART. This pin should NOT be connected directly to a PC COM port. 11 P3.1/TXD. General-purpose I/O port pin 3.1. Also serves as the transmit signal for the on- board UART. This pin should NOT be connected directly to a PC COM port. 12 P3.2/ INT0 . General-purpose I/O port pin 3.2. Also serves as the active low External Interrupt 0. 13 P3.3/ INT1 . General-purpose I/O port pin 3.3. Also serves as the active low External Interrupt 1. 14 P3.4/T0. General-purpose I/O port pin 3.4. Also serves as the Timer 0 input. |
Similar Part No. - DS2251T-32-16 |
|
Similar Description - DS2251T-32-16 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |