 |
Motore di ricerca datesheet componenti elettronici |
|
|
Motore di ricerca datesheet componenti elettronici |
|
ATtiny261-ESSZ Scheda tecnica(PDF) 174 Page - ATMEL Corporation |
|
|
|||||||||||||||||||||||||||||
ATtiny261-ESSZ Scheda tecnica(HTML) 174 Page - ATMEL Corporation |
|
|
174 / 227 page  174 7753C–AVR–07/09 ATtiny261/ATtiny461/ATtiny861 22.5 Reading the Signature Row from Software To read the Signature Row from software, load the Z-pointer with the signature byte address given in Table 22-6 on page 173 and set the SIGRD and SPMEN bits in SPMCSR. When an LPM instruction is executed within three CPU cycles after the SIGRD and SPMEN bits are set in SPMCSR, the signature byte value will be loaded in the destination register. The SIGRD and SPMEN bits will auto-clear upon completion of reading the Signature Row Lock bits or if no LPM instruction is executed within three CPU cycles. When SIGRD and SPMEN are cleared, LPM will work as described in the Instruction set Manual. Note: Before attempting to set SPMEN it is important to test this bit is cleared showing that the hardware is ready for a new operation. 22.6 Page Size 22.7 Parallel Programming Parameters, Pin Mapping, and Commands This section describes how to parallel program and verify Flash Program memory, EEPROM Data memory, Memory Lock bits, and Fuse bits in the ATtiny261/461/861. Pulses are assumed to be at least 250 ns unless otherwise noted. 22.7.1 Signal Names In this section, some pins of the ATtiny261/461/861 are referenced by signal names describing their functionality during parallel programming, see Figure 22-1 and Table 22-9. Pins not described in the following table are referenced by pin names. The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a positive pulse. The bit coding is shown in Table 22-11. When pulsing WR or OE, the command loaded determines the action executed. The different Commands are shown in Table 22-12. Table 22-7. No. of Words in a Page and No. of Pages in the Flash Device Flash Size Page Size PCWORD No. of Pages PCPAGE PCMSB ATtiny261 1K words (2K bytes) 16 words PC[3:0] 64 PC[9:4] 9 ATtiny461 2K words (4K bytes) 32 words PC[4:0] 64 PC[10:5] 10 ATtiny861 4K words (8K bytes) 32 words PC[4:0] 128 PC[11:5] 11 Table 22-8. No. of Words in a Page and No. of Pages in the EEPROM Device EEPROM Size Page Size PCWORD No. of Pages PCPAGE EEAMSB ATtiny261 128 bytes 2 bytes EEA[1:0] 64 EEA[6:2] 6 ATtiny461 256 bytes 4 bytes EEA[1:0] 64 EEA[7:2] 7 ATtiny861 512 bytes 4 bytes EEA[1:0] 128 EEA[8:2] 8 |
|
Link URL |
| Lei ha avuto il aiuto da alldatasheet? [ DONATE ] |
Di alldatasheet | Richest di pubblicita | contatti | Privacy Policy | Collegamento alla scheda tecnica | scambio Link | Ricerca produttore 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 |
Italian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
