MEGA128CAN Datasheet, PDF (366/413 Pages) ATMEL Corporation – Microcontroller WITH 128K BYTES OF ISP FLASH AND CAN CONTROLLER

Table 143. External Data Memory Characteristics, V_CC = 4.5 - 5.5 Volts, 1 Cycle Wait-state
8 MHz Oscillator
Variable Oscillator
Symbol Parameter
Min.
Max.
Min.
Max.
0 1/t_CLCL
10 t_RLDV
12 t_RLRH
15 t_DVWH
16 t_WLWH
Oscillator Frequency
Read Low to Data Valid
RD Pulse Width
Data Valid to WR High
WR Pulse Width
0.0
16
200
2.0 t_CLCL – 50
240
2.0 t_CLCL – 10
240
2.0 t_CLCL
240
2.0 t_CLCL – 10
Unit
MHz
ns
ns
ns
ns
Table 144. External Data Memory Characteristics, V_CC = 4.5 - 5.5 Volts, SRWn1 = 1, SRWn0 = 0
8 MHz Oscillator
Variable Oscillator
Symbol Parameter
Min.
Max.
Min.
Max.
0 1/t_CLCL
10 t_RLDV
12 t_RLRH
15 t_DVWH
16 t_WLWH
Oscillator Frequency
Read Low to Data Valid
RD Pulse Width
Data Valid to WR High
WR Pulse Width
0.0
16
325
3.0 t_CLCL – 50
365
3.0 t_CLCL – 10
375
3.0 t_CLCL
365
3.0 t_CLCL – 10
Unit
MHz
ns
ns
ns
ns
Table 145. External Data Memory Characteristics, V_CC = 4.5 - 5.5 Volts, SRWn1 = 1, SRWn0 = 1
8 MHz Oscillator
Variable Oscillator
Symbol Parameter
Min.
Max.
Min.
Max.
0 1/t_CLCL
Oscillator Frequency
0.0
16
10 t_RLDV
Read Low to Data Valid
200
3.0 t_CLCL – 50
12 t_RLRH
RD Pulse Width
365
3.0 t_CLCL – 10
14 t_WHDX
Data Hold After WR High
240
2.0 t_CLCL – 10
15 t_DVWH
Data Valid to WR High
375
3.0 t_CLCL
16 t_WLWH
WR Pulse Width
365
3.0 t_CLCL – 10
Unit
MHz
ns
ns
ns
ns
ns
366 AT90CAN128
4250E–CAN–12/04