AT90LS8535-4JC Atmel, AT90LS8535-4JC Datasheet - Page 96
AT90LS8535-4JC
Manufacturer Part Number
AT90LS8535-4JC
Description
IC MCU 8K 4MHZ A/D LV 44PLCC
Manufacturer
Atmel
Series
AVR® 90LSr
Specifications of AT90LS8535-4JC
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
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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AT90S/LS8535
1. Set BS to “1”. This selects high data.
2. Give WR a negative pulse. This starts programming of the data byte. RDY/BSY
3. Wait until RDY/BSY goes high to program the next byte.
(See Figure 69 for signal waveforms.)
The loaded command and address are retained in the device during programming. For
efficient programming, the following should be considered:
• The command needs only be loaded once when writing or reading multiple memory
• Address high byte needs only be loaded before programming a new 256-word page
• Skip writing the data value $FF, that is, the contents of the entire Flash and EEPROM
These considerations also apply to EEPROM programming and Flash, EEPROM and
signature byte reading.
Figure 68. Programming the Flash Waveforms
RDY/BSY
locations.
in the Flash.
after a Chip Erase.
goes low.
RESET
XTAL1
DATA
XA1
XA0
WR
OE
BS
12V
$10
ADDR. HIGH
ADDR. LOW
DATA LOW
1041H–11/01
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