T89C51RD2-3CSCM View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
T89C51RD2-3CSCM Datasheet PDF : 104 Pages
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T89C51RD2
Table 52. AC Parameters for a Variable Clock
Symbol
TXLXL
TQVHX
TXHQX
TXHDX
TXHDV
Type
Min
Min
Min
Min
Max
Standard Clock
12 T
10 T - x
2T-x
x
10 T - x
X2 Clock
6T
5T-x
T-x
x
5 T- x
X parameter for - X parameter for -
M range
L range
50
50
20
20
0
0
133
133
Units
ns
ns
ns
ns
ns
Shift Register Timing
Waveforms
INSTRUCTION
ALE
CLOCK
OUTPUT DATA
WRITE to SBUF
INPUT DATA
CLEAR RI
0
1
2
3
4
5
6
7
8
TXLXL
TQVXH
TXHQX
0
1
2
3
4
5
6
7
TXHDV
TXHDX
SET TI
VALID
VALID VALID
VALID
VALID
VALID
VALID VALID
SET RI
Flash EEPROM Programming
and Verification
Characteristics
TA = 21°C to 27°C; VSS = 0V; VCC = 5V ± 10%.
Table 53. Flash Programming Parameters
Symbol
1/TCLCL
TEHAZ
TAVGL
TGHAX
TDVGL
TGHDX
TGLGH
TGLGH
TAVQV
TELQV
TEHQZ
Parameter
Oscillator Frquency
Control to address float
Address Setup to PROG Low
Adress Hold after PROG
Data Setup to PROG Low
Data Hold after PROG
PROG Width for PGMC and PGXC*
PROG Width for PGML
Address to Valid Data
ENABLE Low to Data Valid
Data Float after ENABLE
Min
4
48 TCLCL
48 TCLCL
48 TCLCL
48 TCLCL
10
48 TCLCL
0
Max
6
48 TCLCL
20
48 TCLCL
48 TCLCL
48 TCLCL
Units
MHz
ms
91
4243G–8051–05/03
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