Electronic Components Datasheet Search |
|
SAB83C515A-5M18-T3 Datasheet(PDF) 10 Page - Siemens Semiconductor Group |
|
SAB83C515A-5M18-T3 Datasheet(HTML) 10 Page - Siemens Semiconductor Group |
10 / 57 page SAB 80C515A/83C515A-5 Semiconductor Group 9 XTAL1 40 37 - XTAL1 Output of the inverting oscillator amplifier. To drive the device from an external clock source, XTAL2 should be driven, while XTAL1 is left unconnected. There are no require- ments on the duty cycle of the external clock signal, since the input to the internal clok- king circuitry is divided down by a divide-by- two flip-flop. Minimum and maximum high and low times and rise/fall times specified in the AC characteristics must be taken into account. P2.0-P2.7 41-48 38-45 I/O Port 2 is an 8-bit bidirectional I/O port with internal pullup resistors. Port 2 pins that have 1's written to them are pulled high by the internal pullup resistors, and in that state can be used as inputs. As inputs, port 2 pins being externally pulled low will source current (I IL, in the DC characteristics) because of the internal pullup resistors. Port 2 emits the high-order address byte during fetches from external program memory and during accesses to external data memory that use 16-bit addresses (MOVX@DPTR). In this application it uses strong internal pullup resistors when issuing 1's. During accesses to external data memory that use 8-bit addresses (MOVX@Ri), port 2 issues the contents of the P2 special function register. PSEN 49 47 O The Program Store Enable output is a control signal that enables the external program memory to the bus during external fetch operations. It is activated every six oscillator periods, except during external data memory accesses. The signal remains high during internal program execution. ALE 50 48 O The Address Latch enable output is used for latching the address into external memory during normal operation. It is activated every six oscillator periods, except during an external data memory access. Pin Definitions and Functions (cont’d) Symbol Pin P-LCC-68 Pin P-MQFP-80 Input (I) Output (O) Function |
Similar Part No. - SAB83C515A-5M18-T3 |
|
Similar Description - SAB83C515A-5M18-T3 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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 |