GMS90 Series
OTP ROM Verification Characteristics
ROM Verification Mode 1
Limit Values
Max.
Parameter
Symbol
Unit
Min.
tAVQV
tCLCL
tEHQZ
1/tCLCL
-
-
48tCLCL
48tCLCL
48tCLCL
6
Address to valid data
ENABLE to valid data
Data float after ENABLE
Oscillator frequency
ns
0
4
MHz
P1.0-P1.7
Address
P2.0-P2.4
t
AVQV
Data Out
PORT 0
t
ELQV
t
EHQZ
P2.7
ENABLE
P1.0-P1.7 = A0-A7
P2.0-P2.5 = A8-A13
P3.4 = A14
Input:
Address:
Data:
P2.6-P2.7, PSEN = VSS
ALE = VIH
EA, RESET = VIH2
P0.0-P0.7 = D0-D7
Figure 11. OTP ROM Verification Mode 1
46
Dec. 1998 Ver 3.0