Rainbow Electronics T89C51RD2 - Manual (Page 83)

83 Rev. F - 15 February, 2001
T89C51RD2
9.5.9. FLASH EEPROM Programming and Verification Characteristics
T A = 21
°
C to 27
°
C; V
SS
= 0V; V
CC
= 5V
±
10%.
9.5.10. FLASH EEPROM Programming and Verification Waveforms
Table 47. Flash Programming Parameters
Symbol Parameter Min Max Units
1/T
CLCL
Oscillator Frquency 4 6 MHz
T
EHAZ
Control to address float 48 T
CLCL
T
AVGL
Address Setup to PROG Low 48 T
CLCL
T
GHAX
Adress Hold after PROG 48 T
CLCL
T
DVGL
Data Setup to PROG Low 48 T
CLCL
T
GHDX
Data Hold after PROG 48 T
CLCL
T
GLGH
PROG Width for PGMC and PGXC* 10 20 ms
T
GLGH
PROG Width for PGML 48 T
CLCL
T
AVQV
Address to Valid Data 48 T
CLCL
T
ELQV
ENABLE Low to Data Valid 48 T
CLCL
T
EHQZ
Data Float after ENABLE 0 48 T
CLCL
T
EHAZ
ALE/PROG
T
AVGL
T
DVGL
P0
P1.0-P1.7
P2.0-P2.4
P3.4-P3.5
CONTROL
SIGNALS
(ENABLE)
ADDRESS
DATA IN
T
GHAX
T
GHDX
T
GLGH
ADDRESS
DATA OUT
T
AVQV
T
ELQV
T
EHQZ
PROGRAMMING VERIFICATION