AT90S8515-8PC Atmel, AT90S8515-8PC Datasheet - Page 80

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

Specifications of AT90S8515-8PC

• 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
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Enter Programming Mode
80
AT90S8515
Table 27. Pin Name Mapping
Table 28. XA1 and XA0 Coding
Table 29. Command Byte Bit Coding
The following algorithm puts the device in Parallel Programming Mode:
1. Apply supply voltage according to Table 26, between V
2. Set the RESET and BS pin to “0” and wait at least 100 ns.
3. Apply 11.5 - 12.5V to RESET. Any activity on BS within 100 ns after +12V has
Programming Mode
XA1
0
0
1
1
Signal Name in
been applied to RESET will cause the device to fail entering programming mode.
RDY/
XA0
DATA
XA0
XA1
WR
OE
BS
0
1
0
1
Command Byte
BSY
1000 0000
0100 0000
0010 0000
0001 0000
0001 0001
0000 1000
0000 0100
0000 0010
0000 0011
Action when XTAL1 is Pulsed
Load Flash or EEPROM Address (High or low address byte determined by BS)
Load Data (High or low data byte for Flash determined by BS)
Load Command
No Action, Idle
Pin Name
PB7-0
PD1
PD2
PD3
PD4
PD5
PD6
I/O
I/O
O
I
I
I
I
I
Function
0: Device is busy programming, 1: Device is ready
for new command
Output Enable (Active low)
Write Pulse (Active low)
Byte Select (“0” selects low byte, “1” selects high
byte)
XTAL Action Bit 0
XTAL Action Bit 1
Bi-directional Data Bus (Output when
Read Lock and Fuse Bits
Command Executed
Read Signature Bytes
Write EEPROM
Read EEPROM
Write Fuse Bits
Write Lock Bits
Write Flash
Read Flash
Chip Erase
CC
and GND.
OE
0841G–09/01
is low)