AT90S8515-4PI Atmel, AT90S8515-4PI Datasheet - Page 88

• Manufacturer Part Number: AT90S8515-4PI
• Description: IC MCU 8K FLSH 4MHZ LV IT 40DIP
• Manufacturer: Atmel
• Series: AVR® 90Sr

Specifications of AT90S8515-4PI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• 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): 2.7 V ~ 6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Table 32. Serial Programming Instruction Set
Note:
88
Instruction
Programming Enable
Chip Erase
Read Program Memory
Write Program Memory
Read EEPROM Memory
Write EEPROM Memory
Write Lock Bits
Read Signature Bytes
1. The signature bytes are not readable in lock mode 3, i.e., both Lock bits programmed.
AT90S8515
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
1 = Lock bit 1
2 = Lock bit 2
1010 1100
1010 1100
0010 H000
0100 H000
1010 0000
1100 0000
1010 1100
0011 0000
Byte 1
Figure 65. Serial Programming Waveforms
0101 0011
100x xxxx
xxxx aaaa
xxxx aaaa
xxxx xxxa
xxxx xxxa
111x x21x
xxxx xxxx
Byte 2
Instruction Format
xxxx xxxx
xxxx xxxx
bbbb bbbb
bbbb bbbb
bbbb bbbb
bbbb bbbb
xxxx xxxx
xxxx xxbb
Byte 3
xxxx xxxx
xxxx xxxx
oooo oooo
iiii iiii
oooo oooo
iiii iiii
xxxx xxxx
oooo oooo
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.
Write Lock bits. Set bits 1,2 = “0” to
program Lock bits.
Read signature byte o at address b.
0841G–09/01
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