T89C51RD2-SMSIM View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'T89C51RD2-SMSIM' PDF : 104 Pages View PDF
Flash EEPROM Programming
and Verification Waveforms
P1.0-P1.7
P2.0-P2.4
P3.4-P3.5
P0
ALE/PROG
CONTROL
SIGNALS
(ENABLE)
PROGRAMMING
ADDRESS
TDVGL
TAVGL
DATA IN
TGHDX
TGHAX
VERIFICATION
ADDRESS
TAVQV
DATA OUT
TGLGH
TEHAZ
TELQV
TEHQZ
External Clock Drive
Characteristics (XTAL1)
Table 54. AC Parameters
Symbol
TCLCL
TCHCX
TCLCX
TCLCH
TCHCL
TCHCX/TCLCX
Parameter
Oscillator Period
High Time
Low Time
Rise Time
Fall Time
Cyclic ratio in X2 mode
Min
Max
25
5
5
5
5
40
60
External Clock Drive
Waveforms
VCC-0.5V
0.45V
0.7VCC
0.2VCC-0.1
TCHCL
AC Testing Input/Output
Waveforms
INPUT/OUTPUT
VCC -0.5 V
0.45 V
TCLCX
TCLCL
TCHCX
TCLCH
0.2 VCC + 0.9
0.2 VCC - 0.1
Units
ns
ns
ns
ns
ns
%
92 T89C51RD2
4243G–8051–05/03
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