User's Manual

BlueMod+SR/AI
BlueMod+SR/AP
Hardware Reference
Release r04d01 www.stollmann.de Page 30 of 65
Symbol Item Condition Limit Unit
Min Typ Max
V
LSEL
Low-Level Input Voltage VSUP = 2,5 to 3,6V 0,0
-
0,3 V
V
LSEH
High-Level Input Voltage VSUP = 2,5 to 3,6V 0,7xVSUP
-
VSUP V
I
lc
I/O pad leakage current VSS ≤ VIN ≤ VSUP -1
-
+1
µA
C
l
Input Capacitance
5
pF
Table 11: DC Characteristics, SLCK (STM32 Backup Domain)
Note: Signal at SLCK is also fed to CSR8811 and has to comply to Table 12, too.
CSR8811 Related Signals:
• BT-ACT, BT-STAT, WLAN-DNY, BT-PER
• SLCK (caution: also connected to STM-32!)
T
amb
= 25°C
Symbol Item Condition Limit Unit
Min Typ Max
V
IL
Low-Level Input Voltage VSUP = 3,3V - 0,4 - 0,4 V
V
IH
High-Level Input Voltage 0,7xVSUP - VSUP+0,4 V
V
OL
Low-Level Output
Voltage
I
OL
= 4mA - - 0,4 V
V
OH
High-Level Output
Voltage
I
OH
= -4mA 0,75xVSUP - - V
I
sp-u
Input-current Strong pull-up -150 -40 -10
µA
I
sp-d
Input-current Strong pull-down +10 +40 -+150
µA
I
wp-u
Input-current Weak pull-up -5,0 -1,0 -0,33
µA
I
wp-d
Input-current Weak pull-down +0,33 -1,0 +5,0
µA
I
lc
I/O pad leakage current n.a.
µA
C
l
Input Capacitance 1,0 - 5,0 pF
Table 12: DC Characteristics, Digital IO (CSR8811 Related)
Note: SLCK is connected to both STM32 and CSR8811 so has to fit to STM32 and CSR8811
requirements at the same time.