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SST89E54RD2A_13 Datasheet, PDF (79/91 Pages) Silicon Storage Technology, Inc – FlashFlex MCU
◁
A Microchip Technology Company
FlashFlex MCU
SST89E54RD2A/RDA / SST89E58RD2A/RDA
AC Electrical Characteristics
Not Recommended for New Designs
AC Characteristics:
(Over Operating Conditions: Load Capacitance for Port 0, ALE#, and PSEN# = 100pF;
Load Capacitance for All Other Outputs = 80pF)
Table 36:AC Electrical Characteristics (1 of 2)
TA = -40°C to +85°C, VDD = 4.5-5.5V@40MHz, VSS = 0V
Oscillator
40 MHz (x1 Mode)
20 MHz (x2 Mode)
Variable
Symbol Parameter
Min
Max
Min
Max
1/TCLCL x1 Mode Oscillator Frequency
0
40
0
40
1/2TCLCL x2 Mode Oscillator Frequency
0
20
0
20
TLHLL
ALE Pulse Width
35
2TCLCL - 15
TAVLL
Address Valid to ALE Low
TCLCL - 25 (3V)
10
TCLCL - 15 (5V)
TLLAX
TLLIV
TLLPL
Address Hold After ALE Low
ALE Low to Valid Instr In
ALE Low to PSEN# Low
TCLCL - 25 (3V)
10
TCLCL - 15 (5V)
4TCLCL - 65 (3V)
55
4TCLCL - 45 (5V)
TCLCL - 25 (3V)
10
TCLCL - 15 (5V)
TPLPH
TPLIV
TPXIX
TPXIZ
TPXAV
TAVIV
TPLAZ
TRLRH
TWLWH
TRLDV
TRHDX
TRHDZ
TLLDV
TAVDV
PSEN# Pulse Width
PSEN# Low to Valid Instr In
Input Instr Hold After PSEN#
Input Instr Float After PSEN#
PSEN# to Address valid
Address to Valid Instr In
PSEN# Low to Address Float
RD# Pulse Width
Write Pulse Width (WE#)
RD# Low to Valid Data In
Data Hold After RD#
Data Float After RD#
ALE Low to Valid Data In
Address to Valid Data In
3TCLCL - 25 (3V)
60
3TCLCL - 15 (5V)
3TCLCL - 55 (3V)
25
3TCLCL - 50 (5V)
0
TCLCL - 5 (3V)
10
TCLCL - 15 (5V)
17
TCLCL - 8
5TCLCL - 80 (3V)
65
5TCLCL - 60 (5V)
10
10
6TCLCL - 40 (3V)
120
6TCLCL - 30 (5V)
6TCLCL - 40 (3V)
120
6TCLCL - 30 (5V)
5TCLCL - 90 (3V)
75
5TCLCL - 50 (5V)
0
0
2TCLCL - 25 (3V)
38
2TCLCL - 12 (5V)
8TCLCL - 90 (3V)
150
8TCLCL - 50 (5V)
9TCLCL - 90 (3V)
150
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
©2011 Silicon Storage Technology, Inc.
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DS25114A
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