HMS81C2012A Datasheet, PDF (94/107 Pages) List of Unclassifed Manufacturers – CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver

HMS81C2012A/2020A
EPROM Enable Delay Time after T_HLD1
T_DLY1
200
nS
EPROM Enable Hold Time in Write Mode
T_HLD2
100
nS
EPROM Enable Delay Time after T_HLD2
T_DLY2
200
nS
CTL2,1 Setup Time after Low Address input and Data input
T_CD1
100
nS
CTL1 Setup Time before Data output in Read and Verify Mode
T_CD2
100
nS
Table 21-2 AC/DC Requirements for Program/Read Mode
START
Set VDD=V_DD1H
Set VPP=V_IHP
Report
Programming failure
Verify blank
PASS
First Address Location
FAIL
Next address location
N=1
EPROM Write
100uS program time
N=N+1
YES
N ≤ 10 ^NO
Verify
FAIL
PASS
Apply 3x program cycle
NO
Last address
?
YES
Verify of all address
Report
Verify failure
VDD=6V & 2.7V
Verify
PASS
Report
Programming OK
FAIL
VPP=0V
VDD=0V
END
Figure 21-5 Programming Flow Chart
90
SEP. 2004 Ver 2.00