ATtiny13 Atmel Corporation, ATtiny13 Datasheet - Page 98
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ATtiny13
Manufacturer Part Number
ATtiny13
Description
Manufacturer
Atmel Corporation
Specifications of ATtiny13
Flash (kbytes)
1 Kbytes
Pin Count
8
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
6
Ext Interrupts
6
Usb Speed
No
Usb Interface
No
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
4
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
0.06
Eeprom (bytes)
64
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
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
1
Output Compare Channels
2
Pwm Channels
2
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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16.3
16.4
98
Performing a Page Write
Addressing the Flash During Self-Programming
ATtiny13
If the EEPROM is written in the middle of an SPM Page Load operation, all data loaded will be
lost.
To execute Page Write, set up the address in the Z-pointer, write “00000101” to SPMCSR and
execute SPM within four clock cycles after writing SPMCSR. The data in R1 and R0 is ignored.
The page address must be written to PCPAGE. Other bits in the Z-pointer must be written to
zero during this operation.
Note:
The Z-pointer is used to address the SPM commands.
Since the Flash is organized in pages (see
be treated as having two different sections. One section, consisting of the least significant bits, is
addressing the words within a page, while the most significant bits are addressing the pages.
This is shown in
addressed independently. Therefore it is of major importance that the software addresses the
same page in both the Page Erase and Page Write operation.
Figure 16-1. Addressing the Flash During SPM
Note:
Bit
ZH (R31)
ZL (R30)
Z - REGISTER
The CPU is halted during the Page Write operation.
PROGRAM MEMORY
1. The variables used in
BIT
PAGE
PROGRAM
COUNTER
15
Z15
Z7
15
7
Figure
PAGE ADDRESS
WITHIN THE FLASH
ZPCMSB
PCMSB
Z14
14
Z6
16-1. Note that the Page Erase and Page Write operations are
6
PCPAGE
Figure 16-1
Z13
Z5
13
5
ZPAGEMSB
PAGEMSB
are listed in
PCWORD
Table 17-5 on page
Z12
12
Z4
4
WORD ADDRESS
WITHIN A PAGE
(1)
1
Table 17-5 on page
Z11
Z3
0
0
11
3
INSTRUCTION WORD
PAGE
Z10
10
Z2
2
104), the Program Counter can
104.
Z9
Z1
9
1
PCWORD[PAGEMSB:0]:
00
01
02
PAGEEND
Z8
Z0
8
0
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