ATMEGA329P-20MN Atmel, ATMEGA329P-20MN Datasheet - Page 310

• Manufacturer Part Number: ATMEGA329P-20MN
• Description: IC MCU AVR 32K 20MHZ 64QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA329P-20MN

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-MLF®, 64-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8021G–AVR–03/11
Table 27-15. Parallel Programming Characteristics, V
Notes:
Figure 27-7. Parallel Programming Timing, Including some General Timing Requirements
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
BVPH
PHPL
PLBX
WLBX
PLWL
BVWL
WLWH
WLRL
WLRH
WLRH_CE
XLOL
BVDV
OLDV
OHDZ
(DATA, XA0/1, BS1, BS2)
1.
2. t
commands.
t
WLRH_CE
WLRH
Parameter
BS1 Valid before PAGEL High
PAGEL Pulse Width High
BS1 Hold after PAGEL Low
BS2/1 Hold after WR Low
PAGEL Low to WR Low
BS1 Valid to WR Low
WR Pulse Width Low
WR Low to RDY/BSY Low
WR Low to RDY/BSY High
WR Low to RDY/BSY High for Chip Erase
XTAL1 Low to OE Low
BS1 Valid to DATA valid
OE Low to DATA Valid
OE High to DATA Tri-stated
Data & Contol
RDY/BSY
is valid for the Write Flash, Write EEPROM, Write Fuse bits and Write Lock bits
PAGEL
XTAL1
is valid for the Chip Erase command.
WR
t
t
BVPH
DVXH
(1)
t
t
XHXL
PHPL
t
t
t
t
XLDX
XLWL
PLBX
PLWL
(2)
t
BVWL
CC
ATmega329P/3290P
= 5V ± 10% (Continued)
t
WLWH
WLRL
Min
150
150
3.7
7.5
67
67
67
67
67
0
0
0
t
WLBX
Typ
Max
250
250
250
4.5
1
9
t
WLRH
Units
ms
ms
ns
ns
ns
ns
ns
ns
ns
μs
ns
ns
ns
ns
310