User's Manual

DATASHEET FC6000 Confidential Information 16/52
3.5.2.3 1V8_ENABLE
Conditions unless noted, otherwise : Tamb.=25°C; Vcc=3V3
Parameter
Conditions
Min.
Typ.
Max.
Unit
1V8_ENABLE V
OH
I
OH
<1mA
2.8
-
V
1V8_ENABLE V
OL
I
OL
<1mA
-0.3
-
0.4
V
3.5.2.4 Recommended schematics
Notes:
1
: To make sure 1V8 power source is off when FC6000 is off, a Pull down resistor can be placed on
1V8_ENABLE line. Minimum value of 10kΩ is advised.
2
: Because current spikes up to ~20mA can occur on RESET_EXT_N pin, it is advised to use an interface
transistor to drive the RESET_EXT_N pin.
3
: BOOTS can be directly driven by a MCU GPIO without special concern.
3.5.3 UART_AT/UART_DBG
Conditions unless noted, otherwise : Tamb.=25°C; Vcc=3V3
Parameter
Conditions
Min.
Typ.
Max.
Unit
Input high level voltage (Vih min)
0.7*Vcc
-
-
V
Input low level voltage (Vil max)
-
-
0.3*Vcc
V
Output high level voltage (Voh min)
Ioh<1mA
Vcc-0.5
-
-
V
Output low level voltage (Vol max)
Iol<1mA
-
-
0.4
V
Rise time
Cload=20pf
-
-
170
ns
Fall time
Cload=20pf
-
-
160
ns
Difference between rise and fall
time
Cload=20pf
20
ns
Baud rate
-
115.2
-
kbps
Emission Baud rate precision
-
0.25
-
%
Reception Baud rate tolerance
-
2.5
-
%
BOOTS
RESET_EXT_N
FC6000
Host MCU
KRC406
(or equivalent)
2
11
12
1V8_ENABLE
EN
OFF
ON
17
33k
1
1V8 Reg.
with ON/OFF
function