参数资料
型号: SST89E54RD2A-40-C-TQJE
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44
封装: ROHS COMPLIANT, MS-026ACB, TQFP-44
文件页数: 68/78页
文件大小: 1671K
代理商: SST89E54RD2A-40-C-TQJE
70
Data Sheet
FlashFlex MCU
SST89E54RD2A/RDA / SST89E58RD2A/RDA
2008 Silicon Storage Technology, Inc.
S71339-02-000
02/08
14.2 AC Electrical Characteristics
AC Characteristics: (Over Operating Conditions: Load Capacitance for Port 0, ALE#, and PSEN# = 100pF;
Load Capacitance for All Other Outputs = 80pF)
TABLE
14-7: AC Electrical Characteristics (1 of 2)
TA = -40°C to +85°C, VDD = 4.5-5.5V@40MHz, VSS = 0V
Symbol
Parameter
Oscillator
Units
40 MHz (x1 Mode)
20 MHz (x2 Mode)
Variable
Min
Max
Min
Max
1/TCLCL
x1 Mode Oscillator Frequency
040
0
40
MHz
1/2TCLCL
x2 Mode Oscillator Frequency
020
0
20
MHz
TLHLL
ALE Pulse Width
35
2TCLCL - 15
ns
TAVLL
Address Valid to ALE Low
TCLCL - 25 (3V)
ns
10
TCLCL - 15 (5V)
ns
TLLAX
Address Hold After ALE Low
TCLCL - 25 (3V)
ns
10
TCLCL - 15 (5V)
ns
TLLIV
ALE Low to Valid Instr In
4TCLCL - 65 (3V)
ns
55
4TCLCL - 45 (5V)
ns
TLLPL
ALE Low to PSEN# Low
TCLCL - 25 (3V)
ns
10
TCLCL - 15 (5V)
ns
TPLPH
PSEN# Pulse Width
60
3TCLCL - 25 (3V)
3TCLCL - 15 (5V)
ns
TPLIV
PSEN# Low to Valid Instr In
3TCLCL - 55 (3V)
ns
25
3TCLCL - 50 (5V)
ns
TPXIX
Input Instr Hold After PSEN#
0ns
TPXIZ
Input Instr Float After PSEN#
TCLCL - 5 (3V)
ns
10
TCLCL - 15 (5V)
ns
TPXAV
PSEN# to Address valid
17
TCLCL - 8
ns
TAVIV
Address to Valid Instr In
5TCLCL - 80 (3V)
ns
65
5TCLCL - 60 (5V)
ns
TPLAZ
PSEN# Low to Address Float
10
ns
TRLRH
RD# Pulse Width
120
6TCLCL - 40 (3V)
6TCLCL - 30 (5V)
ns
TWLWH
Write Pulse Width (WE#)
120
6TCLCL - 40 (3V)
6TCLCL - 30 (5V)
ns
TRLDV
RD# Low to Valid Data In
5TCLCL - 90 (3V)
ns
75
5TCLCL - 50 (5V)
ns
TRHDX
Data Hold After RD#
00
ns
TRHDZ
Data Float After RD#
2TCLCL - 25 (3V)
ns
38
2TCLCL - 12 (5V)
ns
TLLDV
ALE Low to Valid Data In
8TCLCL - 90 (3V)
ns
150
8TCLCL - 50 (5V)
ns
TAVDV
Address to Valid Data In
9TCLCL - 90 (3V)
ns
150
9TCLCL - 75 (5V)
ns
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