Symbol

Alt

Parameter

Test Condition

Min

Max

Unit

Chip Select High to Clock High

50

ns

Clock Low to Chip Select High

100

ns

Input Valid to Clock High

100

ns

Clock High to Input Transition

Temp. Range: grade 1

100

ns

Temp. Range:

grades 3, 6

200

ns

Clock High to Output Low

500

ns

Clock High to Output Valid

500

ns

Clock Low to Chip Select Low

0

ns

Chip Select Low to Clock High

250

ns

Chip Select Low to Chip Select High

Note 1

250

ns

Chip Select High to Output Valid

500

ns

Chip Select Low to Output Hi-Z

ST93C46A

300

ns

ST93C46C, 47C

200

ns

Clock High to Clock Low

Note 2

250

ns

Clock Low to Clock High

Note 2

250

ns

Erase/Write Cycle time

10

ms

Clock Frequency

0

1

MHz

2. The Clock frequency specification calls for a minimum clock period of 1

must be greater or equal to 1

Table 5. AC Characteristics

AI01428

C

OP CODE

OP CODE

START

S

D

OP CODE INPUT

START

tDVCH

tSHCH

tCLSH

tCHCL

tCLCH

tCHDX

Figure 4. Synchronous Timing, Start and Op-Code Input

4/13

ST93C46A/46C/46T, ST93C47C/47T