AT90S8535-8AI Atmel, AT90S8535-8AI Datasheet - Page 99

• 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

Parallel Programming
Characteristics
Serial Downloading
1041H–11/01
Figure 70. Parallel Programming Timing
Table 40. Parallel Programming Characteristics, T
Notes:
Both the Flash and EEPROM memory arrays can be programmed using the serial SPI
bus while RESET is pulled to GND. The serial interface consists of pins SCK, MOSI
(input) and MISO (output), see Figure 71. After RESET is set low, the Programming
Enable instruction needs to be executed first before program/erase operations can be
executed.
Symbol
V
I
t
t
t
t
t
t
t
t
t
t
t
t
t
t
PP
DVXH
XHXL
XLDX
XLWL
BVWL
RHBX
WLWH
WHRL
WLRH
XLOL
OLDV
OHDZ
WLWH_CE
WLWH_PFB
PP
(DATA, XA0/1, BS)
Data & Contol
1. Use t
2. If t
RDY/BSY
XTAL1
DATA
Parameter
Programming Enable Voltage
Programming Enable Current
Data and Control Setup before XTAL1 High
XTAL1 Pulse Width High
Data and Control Hold after XTAL1 Low
XTAL1 Low to WR Low
BS Valid to WR Low
BS Hold after RDY/BSY High
WR Pulse Width Low
WR High to RDY/BSY Low
WR Low to RDY/BSY High
XTAL1 Low to OE Low
OE Low to DATA Valid
OE High to DATA Tri-stated
WR Pulse Width Low for Chip Erase
WR Pulse Width Low for Programming the
Fuse Bits
WLWH
WR
OE
WLWH_CE
is held longer than t
t
for Chip Erase and t
DVXH
t
XHXL
(1)
t
t
t
XLOL
XLWL
XLDX
WLRH
(2)
(2)
, no RDY/BSY pulse will be seen.
t
WLWH_PFB
BVWL
t
WLWH
for programming the Fuse bits.
t
A
OLDV
= 25 ° C ± 10%, V
t
WHRL
11.5
67.0
67.0
67.0
67.0
67.0
67.0
67.0
67.0
Min
0.5
5.0
1.0
AT90S/LS8535
20.0
20.0
10.0
Typ
0.7
1.5
CC
t
t
WLRH
OHDZ
t
RHBX
= 5V ± 10%
250.0
Max
12.5
20.0
15.0
0.9
1.8
Units
ms
ms
ms
µA
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
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