ATMEGA8535L-8AC Atmel, ATMEGA8535L-8AC Datasheet - Page 254

• Manufacturer Part Number: ATMEGA8535L-8AC
• Description: IC AVR MCU 8K LV 8MHZ COM 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8535L-8AC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 109. Serial Programming Instruction Set
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
254
Instruction
Programming Enable
Chip Erase
Read Program Memory
Load Program Memory
Page
Write Program Memory
Page
Read EEPROM Memory
Write EEPROM Memory
Read Lock Bits
Write Lock Bits
Read Signature Byte
Write Fuse Bits
Write Fuse High Bits
Read Fuse Bits
Read Fuse High Bits
Read Calibration Byte
ATmega8535(L)
0010 H000
0100 H000
1010 1100
1010 1100
0100 1100
1010 0000
1100 0000
0101 1000
1010 1100
0011 0000
1010 1100
1010 1100
0101 0000
0101 1000
0011 1000
Byte 1
For characteristics of the SPI module, see “SPI Timing Characteristics” on page 261.
0101 0011
0000 aaaa
0000 aaaa
0000 0000
1010 0000
1010 1000
0000 0000
0000 1000
100x xxxx
0000 xxxx
00xx xxxa
00xx xxxa
111x xxxx
00xx xxxx
00xx xxxx
Byte 2
Instruction Format
bbbb bbbb
bbbb bbbb
bbbb bbbb
xxxb bbbb
0000 00bb
bbbx xxxx
xxxx xxbb
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
Byte 3
oooo oooo
oooo oooo
oooo oooo
oooo oooo
oooo oooo
oooo oooo
xxoo oooo
xxxx xxxx
xxxx xxxx
xxxx xxxx
11ii iiii
Byte4
iiii iiii
iiii iiii
iiii iiii
iiii iiii
Operation
Enable Serial Programming after
RESET goes low.
Chip Erase EEPROM and Flash.
Read H (high or low) data o from
Program memory at word address
a:b.
Write H (high or low) data i to
Program Memory page at word
address b. Data low byte must be
loaded before Data high byte is
applied within the same address.
Write Program Memory Page at
address a:b.
Read data o from EEPROM
memory at address a:b.
Write data i to EEPROM memory
at address a:b.
Read Lock bits. “0” = programmed,
“1” = unprogrammed. See
96 on page 237
Write Lock bits. Set bits = “0” to
program Lock bits. See
on page 237
Read Signature Byte o at address
b.
Set bits = “0” to program, “1” to
unprogram. See
page 239
Set bits = “0” to program, “1” to
unprogram. See
page 238
Read Fuse bits. “0” = programmed,
“1” = unprogrammed. See
99 on page 239
Read Fuse high bits. “0” = pro-
grammed, “1” = unprogrammed.
See
details.
Read Calibration Byte
Table 98 on page 238
for details.
for details.
for details.
Table 99 on
Table 98 on
for details.
for details.
2502K–AVR–10/06
Table 96
Table
Table
for