ELANSC310 AMD [Advanced Micro Devices], ELANSC310 Datasheet - Page 108

• Manufacturer Part Number: ELANSC310
• Description: Single-Chip, 32-Bit, PC/AT Microcontroller
• Manufacturer: AMD [Advanced Micro Devices]

Notes:
These timings are based on default settings and required initial programming. These timings may be modified via the MMS
Memory Wait State 1 Register, Index 62h, and the Command Delay Register, Index 60h. (See the Élan
Programmer’s Reference Manual , order #20665.)
108
Symbol
t10a
t10b
t16a
t16b
t5a
t5b
t7a
t7b
t8a
t8b
t9a
t9b
t12
t13
t14
t15
t17
t18
t19
t20
t21
t11
t1
t2
t3
t4
t6
LA stable to BALE inactive
SA stable to command active
BALE pulse width
LA hold from BALE inactive
SA hold from command inactive Write
SA hold from command inactive Read
BALE inactive to command active
LA stable to MCS16 valid
MCS16 hold from LA change
MEMW command pulse width
MEMR command pulse width
MEMW active to IOCHRDY inactive
MEMR active to IOCHRDY inactive
MEMW hold from IOCHRDY active
MEMR hold from IOCHRDY active
RDDATA setup to command inactive
RDDATA hold from command inactive
WRDATA setup to command inactive
WRDATA hold from command inactive
DBUFOE active from command
DBUFOE hold from command Write
DBUFOE hold from command Read
ENDIRH, ENDIRL setup to MEMR
ENDIRH, ENDIRL hold from MEMR
SA (23:13) stable to MCS16 valid
LA stable to SA stable
SA stable to BALE inactive
Table 56. ISA Memory Read/Write 16-Bit Cycle (See Figure 45)
Parameter Description
Élan™SC310 Microcontroller Data Sheet
P R E L I M I N A R Y
Notes
Min
500
550
330
60
70
35
40
50
25
50
50
–2
50
–4
15
45
0
0
0
Preliminary
TM
Max
340
340
160
110
SC310 Microcontroller
30
35
25
5
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns