AT90LS2333-4AI Atmel, AT90LS2333-4AI Datasheet - Page 77

• Manufacturer Part Number: AT90LS2333-4AI
• Description: IC MCU 2K 4MHZ A/D LV IT 32TQFP
• Manufacturer: Atmel
• Series: AVR® 90LSr

Specifications of AT90LS2333-4AI

• 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: 20
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 6 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

3. Set BS to ‘1’. The status of the Lock bits can now be read at DATA (‘0’ means programmed).
4. Set OE to ‘1’.
Reading the Signature Bytes
The algorithm for reading the Signature bytes is as follows (refer to Programming the Flash for details on Command and
Address loading):
1. A: Load Command ‘0000 1000’.
2. C: Load Address Low Byte ($00 - $02).
3. Set OE to ‘1’.
Parallel Programming Characteristics
Figure 65. Parallel Programming Timing
Bit 5 = SPIEN Fuse bit
Bit 4 = BODLEVEL Fuse bit
Bit 3 = BODEN Fuse bit
Bit 2 = CKSEL2 Fuse bit
Bit 1 = CKSEL1 Fuse bit
Bit 0 = CKSEL0 Fuse bit
Bit 2 = Lock Bit2
Bit 1= Lock Bit1
Set OE to ‘0’, and BS to ‘0’. The selected Signature byte can now be read at DATA.
(DATA, XA0/1, BS)
Data & Contol
RDY/BSY
XTAL1
DATA
WR
OE
t
DVXH
t
XHXL
t
t
t
XLOL
XLWL
XLDX
AT90S/LS2333 and AT90S/LS4433
t
BVWL
t
WLWH
t
OLDV
t
WHRL
t
t
WLRH
OHDZ
t
RHBX
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