ST10R272L STMicroelectronics, ST10R272L Datasheet - Page 72

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ST10R272L

Manufacturer Part Number
ST10R272L
Description
16-BIT Romless MCU WITH MAC UNIT
Manufacturer
STMicroelectronics
Datasheet

Specifications of ST10R272L

Cpu Frequency
0 to 50 MHz
Power
3.3 Volt +/-0.3V

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ST10R272L - ELECTRICAL CHARACTERISTICS
16.3.7
72/77
1
V
Parameter
Sync. RSTIN low time
RSTIN low to internal
reset sequence start
internal reset sequence,
(RSTIN internally pulled
low)
RSTIN rising edge to inter-
nal reset condition end
PORT0 system start-up
configuration setup to
RSTIN rising edge
PORT0 system start-up
configuration hold after
RSTIN rising edge
Bus signals drive from
internal reset end
RSTIN low to signals
release
ALE rising edge from inter-
nal reset condition end
Async. RSTIN low time
DD
1) On power-up reset, the RSTIN pin must be asserted until a stable clock signal is available
2) The value of bits 0 (EMU), 1 (ADAPT), 13 to 15 (Clock Configuration) are loaded during
= 3.3 V
(about 10...50 ms to allow the on-chip oscillator to stabilize) and until System Start-up Con-
figuration is correct on PORT0 (about 50 s for internal pullup devices to load 50 pF from
V
hardware reset as long as internal reset signal is active, and have an immediate effect on
the system.
IL
External Hardware Reset
min to V
0.3 V
IH
2))
min).
1)
1
Symbol
t
t
t
t
t
t
t
t
t
t
70
71
72
73
74
75
76
77
78
79
Table 21 External hardware reset
V
SS
SR
CC
CC
CC
SR
SR
CC
CC
CC
SR
= 0 V
Max. CPU Clock
= 50 MHz
min.
50
4
1024
4
100
1
0
8
1500
T
A
max.
16
1024
6
6
20
50
8
= -40 to +85 °C
min.
Variable CPU Clock
1/2TCL = 1 to 50 MHz
4 TCL + 10
4
1024
4
100
1
0
8
1500
C
L
= 50 pF
max.
16
1024
6
6
20
50
8
ns
TCL
TCL
TCL
ns
TCL
ns
ns
TCL
ns

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