ELANSC310 AMD [Advanced Micro Devices], ELANSC310 Datasheet - Page 102

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

Notes:
1. This is the timing when DOSCS is qualified with MEMR or MEMW, (Bit 4 of ROM Configuration 3 Register, Index B8h, = 0).
2. This is the timing when DOSCS is configured as an address decode, (Bit 4 of ROM Configuration 3 Register, Index B8h, = 1).
These timings are based on default wait state settings, set for 5 wait states with bit 2 in Index 50h and Bits 0 and 1 in Index 62h
equal to 0, and required initial programming. These timings may be modified via the MMS Memory Wait State 1 Register, Index
62h, the Command Delay Register, Index 60h, and the MMS Memory Wait State 2 Register, Index 50h. (See the Élan
Microcontroller Programmer’s Reference Manual , order #20665.)
102
Symbol
t11a
t11b
t1a
t1b
t2a
t2b
t3a
t3b
t4a
t4b
t5a
t5b
t10
t12
t13
t14
t15
t6
t7
t8
t9
SA stable to DOSCS active
SA stable to DOSCS active
SA hold from DOSCS inactive (write)
SA hold from DOSCS inactive (read)
DOSCS pulse width (read)
DOSCS pulse width (write)
MEMW active to DOSCS active
MEMR active to DOSCS active
DOSCS hold from MEMW inactive
DOSCS hold from MEMR inactive
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 MEMW
DBUFOE hold from MEMR
ENDIRH, ENDIRL setup to MEMR
ENDIRH, ENDIRL hold from MEMR
DOSCS active to command active
DOSCS hold from SA
Table 53. DOS ROM Read/Write 8 Bit Cycle (See Figure 42)
Parameter Description
Élan™SC310 Microcontroller Data Sheet
P R E L I M I N A R Y
Notes
1
2
1
1
1
1
1
1
1
1
2
2
Min
160
550
500
170
50
40
90
50
50
–2
–3
0
0
5
Preliminary
Max
50
5
4
4
0
0
5
Units
TM
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
SC310