SST89E52RD-33-C-NI View Datasheet(PDF) - Silicon Storage Technology
Part Name
Description
View to exact match
SST89E52RD-33-C-NI Datasheet PDF : 81 Pages
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FlashFlex51 MCU
SST89E52RD2/RD / SST89E54RD2/RD / SST89E58RD2/RD
SST89V52RD2/RD / SST89V54RD2/RD / SST89V58RD2/RD
Data Sheet
TABLE 14-8: AC Electrical Characteristics (Continued) (2 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
Units
TWHQX Data Hold After WR#
3
TCLCL - 27 (3V)
ns
5
TCLCL - 20 (5V)
ns
TQVWH Data Valid to WR# High
142
7TCLCL - 70 (3V)
ns
125
7TCLCL - 50 (5V)
ns
TQVWX Data Valid to WR# High to Low 10
5
TCLCL - 20
ns
Transition
TRLAZ
RD# Low to Address Float
TWHLH RD# to WR# High to ALE High
5
1. Calculated values are for x1 Mode only
0
0
0
ns
55
TCLCL - 25 (3V) TCLCL + 25 (3V) ns
10
40
TCLCL - 15 (5V) TCLCL + 15 (5V) ns
T14-8.0 1255
Explanation of Symbols Each timing symbol has 5 characters. The first character is always a ‘T’ (stands for
time). The other characters, depending on their positions, stand for the name of a signal or the logical status of that
signal. The following is a list of all the characters and what they stand for.
A: Address
C: Clock
D: Input data
H: Logic level HIGH
I: Instruction (program memory contents)
L: Logic level LOW or ALE
P: PSEN#
Q: Output data
R: RD# signal
T: Time
V: Valid
W: WR# signal
X: No longer a valid logic level
Z: High Impedance (Float)
For example:
TAVLL = Time from Address Valid to ALE Low
TLLPL = Time from ALE Low to PSEN# Low
©2006 Silicon Storage Technology, Inc.
71
S71255-05-000
5/06
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