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SST89E54RD2A Datasheet, PDF (74/84 Pages) Silicon Storage Technology, Inc – FlashFlex MCU
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Data Sheet
14.2 AC Electrical Characteristics
FlashFlex MCU
SST89E54RD2A/RDA / SST89E58RD2A/RDA
SST89V54RD2A/RDA / SST89V58RD2A/RDA
AC Characteristics: (Over Operating Conditions: Load Capacitance for Port 0, ALE#, and PSEN# = 100pF;
Load Capacitance for All Other Outputs = 80pF)
TABLE 14-8: AC Electrical Characteristics (1 of 2)
TA = -40°C to +85°C, VDD = 2.7-3.6V@33MHz, 4.5-5.5V@40MHz, VSS = 0V
Oscillator
33 MHz (x1 Mode) 40 MHz (x1 Mode)
16 MHz (x2 Mode)1 20 MHz (x2 Mode)1
Variable
Symbol Parameter
Min
Max
Min
Max
Min
Max
1/TCLCL x1 Mode Oscillator Frequency
0
33
0
40
0
40
1/2TCLCL x2 Mode Oscillator Frequency
0
16
0
20
0
20
TLHLL
ALE Pulse Width
46
35
2TCLCL - 15
TAVLL
Address Valid to ALE Low
5
TCLCL - 25 (3V)
10
TCLCL - 15 (5V)
TLLAX
Address Hold After ALE Low
5
TCLCL - 25 (3V)
10
TCLCL - 15 (5V)
TLLIV
ALE Low to Valid Instr In
56
55
4TCLCL - 65 (3V)
4TCLCL - 45 (5V)
TLLPL
ALE Low to PSEN# Low
5
TCLCL - 25 (3V)
10
TCLCL - 15 (5V)
TPLPH PSEN# Pulse Width
66
3TCLCL - 25 (3V)
60
3TCLCL - 15 (5V)
TPLIV
PSEN# Low to Valid Instr In
35
3TCLCL - 55 (3V)
25
3TCLCL - 50 (5V)
TPXIX
Input Instr Hold After PSEN#
TPXIZ
Input Instr Float After PSEN#
25
0
TCLCL - 5 (3V)
10
TCLCL - 15 (5V)
TPXAV
TAVIV
PSEN# to Address valid
Address to Valid Instr In
22
17
72
65
TCLCL - 8
5TCLCL - 80 (3V)
5TCLCL - 60 (5V)
TPLAZ PSEN# Low to Address Float
10
10
10
TRLRH RD# Pulse Width
142
6TCLCL - 40 (3V)
120
6TCLCL - 30 (5V)
TWLWH Write Pulse Width (WE#)
142
6TCLCL - 40 (3V)
120
6TCLCL - 30 (5V)
TRLDV RD# Low to Valid Data In
62
5TCLCL - 90 (3V)
75
5TCLCL - 50 (5V)
TRHDX
TRHDZ
Data Hold After RD#
Data Float After RD#
0
0
36
38
0
2TCLCL - 25 (3V)
2TCLCL - 12 (5V)
TLLDV
ALE Low to Valid Data In
152
150
8TCLCL - 90 (3V)
8TCLCL - 50 (5V)
TAVDV
Address to Valid Data In
183
150
9TCLCL - 90 (3V)
9TCLCL - 75 (5V)
Units
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
©2007 Silicon Storage Technology, Inc.
74
S71339-01-000
1/07
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