ATTIny2313-16MI ATMEL Corporation, ATTIny2313-16MI Datasheet - Page 170

• Manufacturer Part Number: ATTIny2313-16MI
• Description: 8-bit AVR Microcontroller with 2K Bytes In-System Programmable Flash
• Manufacturer: ATMEL Corporation

Reading the Calibration Byte
Parallel Programming
Characteristics
170
ATtiny2313/V
The algorithm for reading the Calibration byte is as follows (refer to “Programming the
Flash” on page 165 for details on Command and Address loading):
1. A: Load Command “0000 1000”.
2. B: Load Address Low Byte, 0x00.
3. Set OE to “0”, and BS1 to “1”. The Calibration byte can now be read at DATA.
4. Set OE to “1”.
Fi gure 74. Parallel Programming Timing, Including some General Timing
Requirements
Figure 75. Paral lel Programm ing Ti ming, Loading Sequence wit h Ti ming
Requirements
Note:
PAGEL
XTAL1
(DATA, XA0/1, BS1, BS2)
DATA
BS1
XA0
XA1
1. The timing requirements shown in Figure 74 (i.e., t
Data & Contol
to loading operation.
RDY/BSY
(1)
ADDR0 (Low Byte)
LOAD ADDRESS
PAGEL
XTAL1
(LOW BYTE)
WR
t
t
BVPH
DVXH
(LOW BYTE)
LOAD DATA
DATA (Low Byte)
t
t
XHXL
PHPL
t
t
t
t
t
XLXH
XLDX
PLBX
XLWL
PLWL
t
BVWL
(HIGH BYTE)
LOAD DATA
DATA (High Byte)
t
WLWH
DVXH
t
XLPH
WLRL
LOAD DATA
, t
XHXL
t
PLXH
, and t
t
WLBX
LOAD ADDRESS
XLDX
(LOW BYTE)
2543C–AVR–12/03
ADDR1 (Low Byte)
) also apply
t
WLRH