em6522 EM Microelectronic, em6522 Datasheet - Page 59

• Manufacturer Part Number: em6522
• Description: Mfp Version Of Em6622 Ultra Low Power Microcontroller With 4x32 Lcd Driver
• Manufacturer: EM Microelectronic

18.1.3 Port SP Metal Options
(For ROM Version) Pull-up or no
pull-up can be selected for each
port SP input. The pull-up is only
active in Nch. open drain mode.
Pull-down or no pull-down can be
selected for each port SP input.
The total pull value (pull-up or pull-
down) is a series resistance out of
the resistance R1 and the switching
transistor. The default resistor R1
value is 100 KOhm.
18.1.4 Voltage Regulator Option
18.1.5 Debouncer Frequency Option
Copyright © 2005, EM Microelectronic-Marin SA
Option
Name
MPSPD[3]
MPSPD[2]
MPSPD[1]
MPSPD[0]
Option
Name
MPSPU[3]
MPSPU[2]
MPBPU[1]
MPSPU[0]
Option
name
MVreg
R
PB3 input pull-down
PB2 input pull-down
PB1 input pull-down
PB0 input pull-down
PB3 input pull-up
PB2 input pull-up
PB1 input pull-up
PB0 input pull-up
Voltage Regulator
Strong
Pull-
down
Strong
Pull-up
Default
value
YES
1
1
x
x
x
x
x
x
x
x
Figure 40. Port SP Pull Options
A
Input Circuitry
Typ. 100k
Typ.100k
value
Value
100k
100k
100k
100k
100k
100k
100k
100k
value
user
3
3
B
R1
R1
OR
Pull-down Control
(For ROM Version) By default the internal voltage
regulator supplies the core logic the RAM and the
ROM. With option MVreg(B) the regulator is cut and
V
RAM.
Terminal
Pull-up
PSP[n]
down
bat
59
Pull-
NO
Pull-up Control
No
4
4
is supplying the core logic the ROM and the
To select an option put an X in column 1,2
and 4 and reconfirm the R1 value in column
3.
The default value is : Strong pull-down with
R1=100 KOhm
To select an option put an X in column 1,2
and 4 and reconfirm the R1 value in
column 3.
The default value is : Strong pull-up with
R1=100 KOhm
Resistor R1
100 KOhm
VBAT
www.emmicroelectronic.com
No Pull-up
No Pull-down
EM6522
MPSPDstrong[n]
Strong Pull-down
MPSPUstrong[n]
Strong Pull-up