Spi serial programming characteristics, Atmega162/v – Rainbow Electronics ATmega162V User Manual
Page 248
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
for
details.
Read Extended Fuse Bits
0101 0000
0000 1000
xxxx xxxx
oooo oooo
Read Extended Fuse bits. “0” =
pro-grammed, “1” =
unprogrammed. See
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