AT90S8515-8PC Atmel, AT90S8515-8PC Datasheet - Page 92

• 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: -

External Clock Drive
Waveforms
92
AT90S8515
Figure 67. External Clock
Table 36. External Clock Drive
Note:
Figure 68. External RAM Timing
Symbol
1/t
t
t
t
t
t
Data/Address [7..0]
Data/Address [7..0]
CLCL
CHCX
CLCX
CLCH
CHCL
Note: Clock cycle T3 is only present when external SRAM wait state is enabled.
CLCL
System Clock Ø
Address [15..8]
See “External Data Memory Timing” for a description of how the duty cycle influences the
timing for the external data memory.
VIL1
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
ALE
WR
VIH1
RD
Prev. Address
Prev. Address
Prev. Address
T1
0
4
3a
Address
1
2
V
Address
250.0
100.0
100.0
CC
Min
8
0
3b
= 2.7V to 4.0V
5
T2
13
10
Max
4.0
1.6
1.6
7
6
Address
Data
V
9
125.0
T3
CC
50.0
50.0
Min
Data
0
16
= 4.0V to 6.0V
11
Max
8.0
0.5
0.5
15
12
T4
14
0841G–09/01
Addr.
Addr.
Units
MHz
ns
ns
ns
µs
µs