ATMEGA8HVD-4MX Atmel, ATMEGA8HVD-4MX Datasheet - Page 140

• Manufacturer Part Number: ATMEGA8HVD-4MX
• Description: MCU AVR 8K FLASH 2.1-8V 4MHZ QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8HVD-4MX

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 5
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 2.4 V
• Data Converters: A/D 1x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 18-MLF® Exposed Pad (Staggered Leads), DFN
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Connectivity: -

Table 24-14. High-voltage Serial Programming Instruction Set for ATmega4HVD/8HVD (Continued)
Note:
Notes:
140
Instruction
Read
EEPROM Byte
Write Fuse
Low Bits
Write Lock Bits
Read Fuse
Low Bits
Read Lock Bits
Read
Signature Bytes
Read
Calibration Byte
Load “No
Operation”
Command
a = address high bits, b = address low bits, d = data in high bits, e = data in low bits, p = data out high bits, q = data out low bits,
x = don’t care, 1 = Lock Bit1, 2 = Lock Bit2, 3 = CKSEL Fuse, 4 = SUT0 Fuse, 5 = SUT1 Fuse, Fuse, A = WDTON Fuse, 9 =
EESAVE Fuse, 8 = SPIEN Fuse, 7 = DWEN Fuse, 6 = SELFPRGEN Fuse
1. For page sizes less than 256 words, parts of the address (bbbb_bbbb) will be parts of the page address.
2. The EEPROM is written page-wise. But only the bytes that are loaded into the page are actually written to the EEPROM.
ATmega4HVD/8HVD
Page-wise EEPROM access is more efficient when multiple bytes are to be written to the same page. Note that auto-erase
of EEPROM is not available in High-voltage Serial Programming, only in SPI Programming.
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
0_bbbb_bbbb_00
0_0000_1100_00
0_0100_0100_00
0_0100_1100_00
0_0010_0000_00
0_0100_1100_00
0_0000_0100_00
0_0100_1100_00
0_0000_0100_00
0_0100_1100_00
0_0000_1000_00
0_0100_1100_00
0_0000_1000_00
0_0100_1100_00
0_0000_0000_00
0_0100_1100_00
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
Instr.1/5
0_A987_6543_00
0_0000_00bb_00
0_aaaa_aaaa_00
0_0001_1100_00
0_0010_1100_00
0_0000_0021_00
0_0010_1100_00
0_0000_0000_00
0_0110_1000_00
0_0000_0000_00
0_0111_1000_00
0_0000_1100_00
0_0000_0000_00
0_0000_1100_00
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
Instr.2/6
Instruction Format
0_0000_0000_00
0_0110_1000_00
0_0000_0000_00
0_0110_0100_00
0_0000_0000_00
0_0110_0100_00
0_0000_0000_00
0_0110_1100_00
A_9876_543x_xx
0_0000_0000_00
0_0111_1100_00
0_0000_0000_00
0_0110_1000_00
0_0000_0000_00
0_0111_1000_00
x_xxxx_x21x_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
Instr.3
q_qqqq_qqq0_00
q_qqqq_qqqx_xx
p_pppp_pppx_xx
0_0000_0000_00
0_0110_1100_00
0_0000_0000_00
0_0110_1100_00
0_0000_0000_00
0_0110_1100_00
0_0000_0000_00
0_0110_1100_00
0_0000_0000_00
0_0111_1100_00
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
Instr.4
Operation Remarks
Wait after Instr. 4 until SDO
goes high. Write A - 3 = “0”
to program the Fuse bit.
Wait after Instr. 4 until SDO
goes high. Write 2 - 1 = “0” to
program the Lock Bit.
Reading A - 3 = “0” means
the Fuse bit is programmed.
Reading 2, 1 = “0” means the
Lock bit is programmed.
Repeats Instr 2 4 for each
signature byte address.
8052B–AVR–09/08