AT90S8535-8AI Atmel, AT90S8535-8AI Datasheet - Page 102

• Manufacturer Part Number: AT90S8535-8AI
• Description: IC MCU 8K 8MHZ A/D IT 44TQFP
• Manufacturer: Atmel
• Series: AVR® 90Sr

Specifications of AT90S8535-8AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: 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): 4 V ~ 6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 42. Serial Programming Instruction Set
Notes:
102
Instruction
Programming Enable
Chip Erase
Read Program Memory
Write Program Memory
Read EEPROM Memory
Write EEPROM Memory
Read Lock and Fuse Bits
Write Lock Bits
Read Signature Byte
Write FSTRT Fuse
1. a = address high bits
2. The signature bytes are not readable in lock mode 3, i.e., both Lock bits programmed.
AT90S/LS8535
b = address low bits
H = 0 – Low byte, 1 – High Byte
o = data out
i = data in
x = don’t care
1 = Lock Bit 1
2 = Lock Bit 2
F = FSTRT Fuse
S = SPIEN Fuse
1010 1100
1010 1100
0010 H000
0100 H000
1010 0000
1100 0000
0101 1000
1010 1100
0011 0000
1010 1100
Byte 1
f
0101 0011
100x xxxx
xxxx aaaa
xxxx aaaa
xxxx xxxa
xxxx xxxa
xxxx xxxx
1111 1211
xxxx xxxx
1011 111F
Byte 2
Instruction Format
xxxx xxxx
xxxx xxxx
bbbb bbbb
bbbb bbbb
bbbb bbbb
bbbb bbbb
xxxx xxxx
xxxx xxxx
xxxx xxbb
xxxx xxxx
Byte 3
xxxx xxxx
xxxx xxxx
oooo oooo
iiii iiii
oooo oooo
iiii iiii
12Sx xxxF
xxxx xxxx
oooo oooo
xxxx xxxx
Byte4
Operation
Enable serial programming
while RESET is low.
Chip Erase Flash and
EEPROM memory arrays.
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 at word
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 and Fuse bits.
“0” = programmed
“1” = unprogrammed
Write Lock bits. Set bits 1,2 =
“0” to program Lock bits.
Read signature byte o at
address b.
Write FSTRT fuse. Set bit
F = “0” to program,
“1” to unprogram.
(2)
1041H–11/01