ATMEGA16HVA-4CKU Atmel, ATMEGA16HVA-4CKU Datasheet - Page 147
![MCU AVR 16K FLASH 4MHZ 36-LGA](/photos/12/32/123221/36ck1-lga_sml.jpg)
ATMEGA16HVA-4CKU
Manufacturer Part Number
ATMEGA16HVA-4CKU
Description
MCU AVR 16K FLASH 4MHZ 36-LGA
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA16HVA-4CKU.pdf
(196 pages)
Specifications of ATMEGA16HVA-4CKU
Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
7
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 9 V
Data Converters
A/D 5x12b
Oscillator Type
External
Operating Temperature
-20°C ~ 85°C
Package / Case
36-LGA
Processor Series
ATMEGA16x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SPI
Maximum Clock Frequency
4 MHz
Number Of Programmable I/os
6
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRSB200, ATAVRSB201
Minimum Operating Temperature
- 20 C
On-chip Adc
12 bit, 5 Channel
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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26.3
26.3.1
8024A–AVR–04/08
Register Description
SPMCSR – Store Program Memory Control and Status Register
Table 26-4.
The Store Program Memory Control and Status Register contains the control bits needed to con-
trol the Program memory operations.
• Bits 7:6 – Res: Reserved Bits
These bits are reserved for future use.
For compatibility with future devices, these bits must be written to zero when SPMCSR is
written.
• Bit 5 – SIGRD: Signature Row Read
If this bit is written to one at the same time as SPMEN, the next LPM instruction within three
clock cycles will read a byte from the signature row into the destination register. See
the Signature Row from Software” on page 144
An SPM instruction within four cycles after SIGRD and SPMEN are set will have no effect. This
operation is reserved for future use and should not be used.
• Bit 4 – CTPB: Clear Temporary Page Buffer
If the CTPB bit is written while filling the temporary page buffer, the temporary page buffer will be
cleared and the data will be lost.
• Bit 3 – RFLB: Read Fuse and Lock Bits
An LPM instruction within three cycles after RFLB and SPMEN are set in the SPMCSR Register,
will read either the Lock bits or the Fuse bits (depending on Z0 in the Z-pointer) into the destina-
tion register. See
Bit
0x37 (0x57)
Read/Write
Initial Value
Variable
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
Explanation of different variables used in
pointer, ATmega16HVA.
PC[12:6]
R
7
–
0
PC[5:0]
”EEPROM Write Prevents Writing to SPMCSR” on page 143
5
R
6
–
0
Corresponding
Z-value
Z13:Z7
Z6:Z1
SIGRD
R/W
Z13
Z6
5
0
CTPB
R/W
4
0
Description
Most significant bit which is used to address the
words within one page (64 words in a page requires
six bits PC [5:0]).
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 PCMSB. 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)
for details.
RFLB
R/W
3
0
ATmega8HVA/16HVA
Figure 26-1
PGWRT
R/W
2
0
and the mapping to the Z-
PGERS
R/W
1
0
for details.
SPMEN
R/W
0
0
”Reading
SPMCSR
147
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