ATmega88PA Atmel Corporation, ATmega88PA Datasheet - Page 278
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ATmega88PA
Manufacturer Part Number
ATmega88PA
Description
Manufacturer
Atmel Corporation
Specifications of ATmega88PA
Flash (kbytes)
8 Kbytes
Pin Count
32
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
23
Ext Interrupts
24
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
1
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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- Current page: 278 of 567
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26.3
26.3.1
8271D–AVR–05/11
Register Description
SPMCSR – Store Program Memory Control and Status Register
The Store Program Memory Control and Status Register contains the control bits needed to con-
trol the Program memory operations.
• Bit 7 – SPMIE: SPM Interrupt Enable
When the SPMIE bit is written to one, and the I-bit in the Status Register is set (one), the SPM
ready interrupt will be enabled. The SPM ready Interrupt will be executed as long as the SELF-
PRGEN bit in the SPMCSR Register is cleared. The interrupt will not be generated during
EEPROM write or SPM.
• Bit 6 – RWWSB: Read-While-Write Section Busy
This bit is for compatibility with devices supporting Read-While-Write. It will always read as zero
in ATmega 48A/48PA.
• Bit 5 – Reserved
This bit is a reserved bit in the ATmega48A/PA/88A/PA/168A/PA/328/P and will always read as
zero.
• Bit 4 – RWWSRE: Read-While-Write Section Read Enable
The functionality of this bit in ATmega 48A/48PA is a subset of the functionality in
ATmega88A/88PA/168A/168PA/328/328P. If the RWWSRE bit is written while filling the tempo-
rary page buffer, the temporary page buffer will be cleared and the data will be lost.
• Bit 3 – BLBSET: Boot Lock Bit Set
The functionality of this bit in ATmega 48A/48PA is a subset of the functionality in
ATmega88A/88PA/168A/168PA/328/328P. An LPM instruction within three cycles after BLBSET
and SELFPRGEN 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 destination register. See
Bits from Software” on page 273
• Bit 2 – PGWRT: Page Write
If this bit is written to one at the same time as SELFPRGEN, the next SPM instruction within four
clock cycles executes Page Write, with the data stored in the temporary buffer. The page
address is taken from the high part of the Z-pointer. The data in R1 and R0 are ignored. The
PGWRT bit will auto-clear upon completion of a Page Write, or if no SPM instruction is executed
within four clock cycles. The CPU is halted during the entire Page Write operation.
• Bit 1 – PGERS: Page Erase
If this bit is written to one at the same time as SELFPRGEN, the next SPM instruction within four
clock cycles executes Page Erase. The page address is taken from the high part of the Z-
pointer. The data in R1 and R0 are ignored. The PGERS bit will auto-clear upon completion of a
Bit
0x37 (0x57)
Read/Write
Initial Value
SPMIE
R/W
7
0
ATmega48A/PA/88A/PA/168A/PA/328/P
RWWSB
R
6
0
for details.
R
5
–
0
RWWSRE
R/W
4
0
BLBSET
R/W
3
0
PGWRT
R/W
2
0
”Reading the Fuse and Lock
PGERS
R/W
1
0
SELFPRGEN
R/W
0
0
SPMCSR
278
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