Rainbow-electronics ATmega162V Manual do Utilizador descarregar pdf (Página 248)

100

101

248

ATmega162/V

2513E–AVR–09/03

Note: 1. a = address high bits, b = address low bits, H = 0 – Low byte, 1 – High Byte, o = data out, i = data in, x = don’t care

SPI Serial Programming

Characteristics

For characteristics of the SPI module, see “SPI Timing Characteristics” on page 267.

Read Fuse High Bits

0101 1000 0000 1000 xxxx xxxx oooo oooo Read Fuse high bits. “0” = pro-

grammed, “1” = unprogrammed.

See Table 100 on page 232 for

details.

Read Extended Fuse Bits

0101 0000 0000 1000 xxxx xxxx oooo oooo Read Extended Fuse bits. “0” =

pro-grammed, “1” =

unprogrammed. See Table 99 on

page 231

for details.

Read Calibration Byte 0011 1000 00xx xxxx 0000 0000 oooo oooo Read Calibration Byte

Poll RDY/BSY

1111 0000 0000 0000 xxxx xxxx xxxx xxxo If o = “1”, a programming operation

is still busy. Wait until this bit

returns to “0” before applying

another command.

Table 111. SPI Serial Programming Instruction Set

(1)

(Continued)

Instruction Instruction Format Operation

Byte 1 Byte 2 Byte 3 Byte4

1 2 ... 243 244 245 246 247 248 249 250 251 252 253 ... 322 323

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