AT90CAN128-16AE ATMEL Corporation, AT90CAN128-16AE Datasheet - Page 367

• 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

4250C–CAN–03/04
System Clock (CLK
DA7:0 (XMBK = 0)
DA7:0
A15:8
CPU
ALE
WR
System Clock (CLK
RD
)
DA7:0 (XMBK = 0)
Prev. addr.
Prev. data
DA7:0
A15:8
T1
CPU
ALE
WR
RD
)
Prev. addr.
Prev. data
1
Address
Address
Figure 172. External Memory Timing (SRWn1 = 1, SRWn0 = 0)
Figure 173. External Memory Timing (SRWn1 = 1, SRWn0 = 1)
Note:
4
2
5
T2
6
T1
3a
3b
XX
7
8
1. The ALE pulse in the last period (T4-T7) is only present if the next instruction
13
accesses the RAM (internal or external).
1
Address
10
Address
4
2
T3
5
T2
6
3a
3b
XX
7
8
13
10
Data
Address
12
Data
16
T3
15
9
T4
Data
Address
12
Data
16
15
T4
9
T5
11
T5
T6
AT90CAN128
(1)
11
14
T7
T6
14
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