Electronic Components Datasheet Search |
|
M14C32 Datasheet(PDF) 7 Page - STMicroelectronics |
|
M14C32 Datasheet(HTML) 7 Page - STMicroelectronics |
7 / 14 page 7/14 M14C64, M14C32 typical time is shorter. To make use of this, an ACK polling sequence can be used by the master. The sequence, as shown in Figure 8, is as follows: – Initial condition: a Write is in progress. – Step 1: the master issues a START condition followed by a device select byte (first byte of the new instruction). – Step 2: if the memory is busy with the internal write cycle, no ACK will be returned and the master goes back to Step 1. If the memory has terminated the internal write cycle, it responds with an ACK, indicating that the memory is ready to receive the second part of the next in- struction (the first byte of this instruction having been sent during Step 1). Read Operations Read operations are independent of the state of the WC pin. On delivery, the memory content is set at all “1’s” (FFh). ed. The transfer is terminated by the master generating a STOP condition. Care must be taken to avoid address counter ’roll-over’ which could re- sult in data being overwritten. Note that, for any byte or page write mode, the generation by the master of the STOP condition starts the internal memory program cycle. This STOP condition trig- gers an internal memory program cycle only if the STOP condition is internally decoded immediately after the ACK bit; any STOP condition decoded out of this "10th bit" time slot will not trigger the in- ternal programming cycle. All inputs are disabled until the completion of this cycle and the Memory will not respond to any request. Minimizing System Delays by Polling On ACK During the internal write cycle, the memory discon- nects itself from the bus, and copies the data from its internal latches to the memory cells. The maxi- mum write time (tw) is indicated in Table 7, but the Figure 8. Write Cycle Polling Flowchart using ACK WRITE Cycle in Progress AI02165 Next Operation is Addressing the Memory START Condition DEVICE SELECT with RW = 0 ACK Returned YES NO YES NO ReSTART STOP Proceed WRITE Operation Proceed Random Address READ Operation Send Byte Address First byte of instruction with RW = 0 already decoded by M14xxx |
Similar Part No. - M14C32 |
|
Similar Description - M14C32 |
|
|
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 |