ATMEGA16L-8PU Atmel, ATMEGA16L-8PU Datasheet - Page 247
![IC AVR MCU 16K 8MHZ 3V 40DIP](/photos/6/70/67049/453-40-dip_sml.jpg)
ATMEGA16L-8PU
Manufacturer Part Number
ATMEGA16L-8PU
Description
IC AVR MCU 16K 8MHZ 3V 40DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets
1.ATMEGA16L-8MI.pdf
(26 pages)
2.ATMEGA16L-8MI.pdf
(357 pages)
3.ATMEGA16-16PU.pdf
(358 pages)
Specifications of ATMEGA16L-8PU
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K 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
40-DIP (0.600", 15.24mm)
Processor Series
ATMEGA16x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
JTAG/SPI/UART
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
32
Number Of Timers
3
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
3rd Party Development Tools
EWAVR, EWAVR-BL
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
A/d Inputs
8-Channel, 10-Bit
Cpu Speed
8 MIPS
Eeprom Memory
512 Bytes
Input Output
32
Interface
JTAG/SPI/UART
Memory Type
Flash
Number Of Bits
8
Package Type
40-pin PDIP
Programmable Memory
16K Bytes
Timers
2-8-bit, 1-16-bit
Voltage, Range
2.7-5.5 V
For Use With
ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEMATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 247 of 357
- Download datasheet (8Mb)
RWW – Read-While-
Write Section
NRWW – No Read-
While-Write Section
2466T–AVR–07/10
If a Boot Loader software update is programming a page inside the RWW section, it is possible
to read code from the Flash, but only code that is located in the NRWW section. During an on-
going programming, the software must ensure that the RWW section never is being read. If the
user software is trying to read code that is located inside the RWW section (that is, by a
call/jmp/lpm or an interrupt) during programming, the software might end up in an unknown
state. To avoid this, the interrupts should either be disabled or moved to the Boot Loader sec-
tion. The Boot Loader section is always located in the NRWW section. The RWW Section Busy
bit (RWWSB) in the Store Program Memory Control Register (SPMCR) will be read as logical
one as long as the RWW section is blocked for reading. After a programming is completed, the
RWWSB must be cleared by software before reading code located in the RWW section.
“Store Program Memory Control Register – SPMCR” on page 250.
RWWSB.
The code located in the NRWW section can be read when the Boot Loader software is updating
a page in the RWW section. When the Boot Loader code updates the NRWW section, the CPU
is halted during the entire page erase or page write operation.
Table 95. Read-While-Write Features
Figure 124. Read-While-Write vs. No Read-While-Write
pointer Address during the
Which Section does the Z-
Programming?
NRWW section
RWW section
Z-pointer
Addresses RWW
Section
Code Located in
NRWW Section
Can be Read during
the Operation
Which Section can be
Programming?
NRWW section
Read during
Read-While-Write
No Read-While-Write
(RWW) Section
(NRWW) Section
None
Is the CPU
Halted?
Yes
No
Z-pointer
Addresses NRWW
Section
CPU is Halted
during the Operation
for details on how to clear
ATmega16(L)
Read-While-
Supported?
Write
Yes
No
See
247
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