ST40RA View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST40RA' PDF : 94 Pages View PDF
ST40RA
7 Electrical specifications
7.1.2 Operating conditions
Symbol
Parameter
Min
Typical
Max
Units Notes
VDDCORE Core positive supply voltage
1.65
1.8
1.95
V
a
VDDIO
VDDRTC
VDDMM
I/O positive supply voltage
RTC positive supply voltage
VDD mismatch
3.0
1.65
3.3
3.6
1.8
1.95
0.3
V
a
V
V
b
LVREF
VDDLMI
1.15
VDDLMI / 2 1.35
3.0
3.3
3.6
2.3
2.5
2.7
V
V
c
V
d
VIH
LVTTL input logic 1 voltage
2.0
VIH1
LVTTL input 1 logic voltage EMODE 2.4
pins
VIL
LVTTL input login 0 voltage
-0.5
VIHs
SSTT_2 input login 1 voltage
LVREF + 0.18
VILs
SSTT_2 input login 0 voltage
-0.3
VOH
LVTTL output logic 1 voltage
2.4
VDD + 0.6
V
VDD + 0.6
V
0.8
V
VDDLMI + 0.3 V
LVREF - 0.18 V
V
e
VOL
LVTTL output logic 0 voltage
VOHs
SSTT_2 output logic 1 voltage
2.1
VOLs
SSTT_2 output logic 0 voltage
IIN
Input current (input pin)
0.4
0.3
+-10
V
c
V
e
V
uA
f
IOZ
Offstate digital output current
IWP
Input weak pull-up or pull-down
20
current
CIN
Input capacitance (input pins)
CIO
Input capacitance (bidirectional
pins)
+- 50
uA
f
60
110
uA
d
10
pF
7
15
pF
Table 22: Operating conditions
a. Either the I/O ring (VDDIO) or the core (VDDCORE) may be powered up first.
b. VDDCORE - VDDRTC
c. When in SDRAM mode
d. When in DDR-SDRAM mode
e. For specified output loads see Table 24.
f. 0 <= VI <= VDD
ADCS 7260755H
STMicroelectronics 44/94
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