AT90PWM316-16SUR Atmel, AT90PWM316-16SUR Datasheet - Page 279

• Manufacturer Part Number: AT90PWM316-16SUR
• Description: MCU AVR 16K FLASH 16MHZ 32-SOIC
• Manufacturer: Atmel
• Series: AVR® 90PWM Lightingr

Specifications of AT90PWM316-16SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 27
• Program Memory Size: 16KB (16K x 8)
• 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 11x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 32-SOIC (7.5mm Width)
• For Use With: ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOICATAVRMC200 - KIT EVAL FOR AT90PWM3 ASYNCATAVRFBKIT - KIT DEMO BALLAST FOR AT90PWM2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

25. Memory Programming
25.1
7710E–AVR–08/10
Program And Data Memory Lock Bits
For details about these two section, see
and
Table 24-8.
Note:
The AT90PWM216/316 provides six Lock bits which can be left unprogrammed (“1”) or can be
programmed (“0”) to obtain the additional features listed in
erased to “1” with the Chip Erase command.
Table 25-1.
Variable
PCMSB
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
BLB12
BLB11
BLB02
BLB01
LB2
LB1
“RWW – Read-While-Write Section” on page 267
Lock Bit Byte
1. Z15:Z14: always ignored
Z0: should be zero for all SPM commands, byte select for the LPM instruction.
See
Z-pointer during Self-Programming.
Explanation of Different Variables used in
pointer
Lock Bit Byte
“Addressing the Flash During Self-Programming” on page 272
PC[12:6]
PC[5:0]
12
5
(1)
Corresponding
Bit No
Z-value
7
6
5
4
3
2
1
0
Z13:Z7
Z6:Z1
Z13
Z6
(1)
“NRWW – No Read-While-Write Section” on page 267
Description
–
–
Boot Lock bit
Boot Lock bit
Boot Lock bit
Boot Lock bit
Lock bit
Lock bit
Description
Most significant bit in the Program Counter. (The
Program Counter is 12 bits PC[11:0])
Most significant bit which is used to address the
words within one page (32 words in a page requires
5 bits PC [4:0]).
Bit in Z-register that is mapped to PCMSB. Because
Z0 is not used, the ZPCMSB equals PCMSB + 1.
Bit in Z-register that is mapped to PAGEMSB.
Because Z0 is not used, the ZPAGEMSB equals
PAGEMSB + 1.
Program counter page address: Page select, for
page erase and page write
Program counter word address: Word select, for
filling temporary buffer (must be zero during page
write operation)
Figure 24-3
Table
AT90PWM216/316
25-2. The Lock bits can only be
Default Value
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
and the Mapping to the Z-
for details about the use of
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