ATMEGA644P-15AT Atmel, ATMEGA644P-15AT Datasheet - Page 310
ATMEGA644P-15AT
Manufacturer Part Number
ATMEGA644P-15AT
Description
MCU AVR 64K FLASH 15MHZ 44-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644P-15AT
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K 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
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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ATmega164P/324P/644P
Figure 25-7. Parallel Programming Timing, Including some General Timing Requirements
Figure 25-8. Parallel Programming Timing, Loading Sequence with Timing Requirements
Note:
Figure 25-9. Parallel Programming Timing, Reading Sequence (within the Same Page) with
Note:
(DATA, XA0/1, BS1, BS2)
1. The timing requirements shown in
1. The timing requirements shown in
XTAL1
DATA
PAGEL
XTAL1
BS1
XA0
XA1
DATA
OE
apply to loading operation.
apply to reading operation.
BS1
XA0
XA1
Data & Contol
Timing Requirements
RDY/BSY
PAGEL
XTAL1
ADDR0 (Low Byte)
LOAD ADDRESS
ADDR0 (Low Byte)
WR
LOAD ADDRESS
(LOW BYTE)
(LOW BYTE)
t
XLOL
t
OLDV
t
t
BVPH
DVXH
(1)
(LOW BYTE)
LOAD DATA
DATA (Low Byte)
t
t
XHXL
PHPL
DATA (Low Byte)
Figure 25-7 on page 310
READ DATA
(LOW BYTE)
Table 25-7 on page 310
t
t
t
t
t
XLXH
XLDX
PLBX
XLWL
PLWL
t
BVDV
t
(HIGH BYTE)
LOAD DATA
BVWL
DATA (High Byte)
(HIGH BYTE)
READ DATA
DATA (High Byte)
t
XLPH
t
LOAD DATA
WLWH
WLRL
(i.e., t
(i.e., t
t
OHDZ
t
PLXH
DVXH
DVXH
t
WLBX
LOAD ADDRESS
LOAD ADDRESS
, t
(LOW BYTE)
(LOW BYTE)
, t
ADDR1 (Low Byte)
XHXL
ADDR1 (Low Byte)
XHXL
, and t
, and t
7674F–AVR–09/09
t
WLRH
XLDX
XLDX
) also
) also
(1)
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