MSU2051 Datasheet, PDF (7/21 Pages) Mosel Vitelic, Corp – low working voltage 16 MHz ROM less MCU

MOSEL VITELIC
MSU2051/U2031
Operating Conditions
Symbol
tA
V CC3
V CC5
f osc 16
f osc 25
f osc 40
Description
Ambient temperature under bias
Supply voltage
Oscillator Frequency
Min.
0
2.7
4.5
3.0
16
25
Typ.
25
3.0
5.0
16
25
40
Max.
70
4.5
5.5
16
25
40
Unit
°C
V
V
MHz
MHz
MHz
Remarks
U20x1L
U20x1S, U20x1C
U20x1i16
U20x1i25
U20x1i40
AC Characteristics
(16/25/40 MHz, operating conditions; CL for Port 0, ALE and PSEN Outputs=150pF; CL for all OtherOutputs=80pF)
Valid
f osc 16
Variable f osc
Symbol
Parameter
Cycle
Min. Typ. Max Min. Typ. Max.
T LHLL
T AVLL
T LLAX
ALE pulse width
Address Valid to ALE low
Address Hold after ALE low
RD/WRT 115
RD/WRT 43
RD/WRT 53
2xT - 10
T - 20
T - 10
T LLIV
ALE low to Valid Instruction In
RD
240
4xT - 10
T LLPL
T PLPH
ALE low to #PSEN low
#PSEN pulse width
RD
53
RD
173
T - 10
3xT - 15
T PLIV
#PSEN low to Valid Instruction In RD
177
3xT - 10
T PXIX
Instruction Hold after #PSEN
RD
0
0
T PXIZ
Instruction Float after #PSEN
RD
87
T + 25
T AVIV
Address to Valid Instruction In
RD
292
5xT - 20
T PLAZ
#PSEN low to Address Float
RD
10
10
T RLRH
T WLWH
#RD pulse width
#WR pulse width
RD
365
WRT
365
6xT - 10
6xT - 10
T RLDV
#RD low to Valid Data in
RD
302
5xT - 10
T RHDX
T RHDZ
Data Hold after #RD
Data Float after #RD
RD
0
0
RD
145
2xT + 20
T LLDV
ALE low to Valid Data In
RD
490
8xT - 10
T AVDV Address to Valid Data In
RD
542
9xT - 20
T LLYL
T AVYL
ALE low to #WR or #RD low
RD/WRT 178
Address Valid to #WR or #RD low RD/WRT 230
197 _{3xT - 10}
4xT - 20
3xT + 10
T QVWH Data Valid to #WR High
WRT
403
7xT - 35
T QVWX Data Valid to #WR transition
WRT
38
T WHQX Data hold after #WR
WRT
73
T RLAZ
#RD low to Address Float
RD
T - 25
T + 10
5
T YHLH
T CHCL
#WR or #RD high to ALE high
Clock fall time
RD/WRT 53
72
T - 10
T + 10
T CLCX
Clock low time
T CLCH
Clock rise time
T CHCX Clock high time
T, T CLCL Clock period
63
1/ fosc
Unit
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
Remarks
Rev. 1.0 February 1998
7