AT90CAN128-16AE ATMEL Corporation, AT90CAN128-16AE Datasheet - Page 332

• Manufacturer Part Number: AT90CAN128-16AE
• Description: 8-bit Avr Microcontroller With 128K Bytes of Isp Flash And CAN Controller.flash (Kbytes) 128 Vcc (V) 2.7-5.5 EEPROM (Kbytes) 4 SRAM (bytes) 4K CAN (mess. Obj.) 15
• Manufacturer: ATMEL Corporation

Reading the Flash
332
AT90CAN128
3. B: Load Address Low Byte (0x00 - 0xFF).
4. C: Load Data (0x00 - 0xFF).
5. E: Latch data (give PAGEL a positive pulse).
K: Repeat 3 through 5 until the entire buffer is filled.
L: Program EEPROM page
1. Set BS to “0”.
2. Give WR a negative pulse. This starts programming of the EEPROM page.
3. Wait until to RDY/BSY goes high before programming the next page (See Figure
Figure 156. Programming the EEPROM Waveforms
The algorithm for reading the Flash memory is as follows (refer to “Programming the
Flash” on page 329 for details on Command and Address loading):
1. A: Load Command “0000 0010”.
2. G: Load Address High Byte (0x00 - 0xFF).
3. B: Load Address Low Byte (0x00 - 0xFF).
4. Set OE to “0”, and BS1 to “0”. The Flash word low byte can now be read at
5. Set BS to “1”. The Flash word high byte can now be read at DATA.
6. Set OE to “1”.
RESET +12V
RDY/BSY
PAGEL
XTAL1
DATA
RDY/BSY goes low.
156 for signal waveforms).
DATA.
XA1
XA0
BS1
BS2
WR
OE
0x11
A
ADDR. HIGH
G
ADDR. LOW
B
DATA
C
XX
E
ADDR. LOW
B
DATA
C
K
XX
E
L
4250C–CAN–03/04