EM6520 EM Microelectronic, EM6520 Datasheet - Page 13

• Manufacturer Part Number: EM6520
• Description: MFP version of EM6620 Ultra Low Power Microcontroller 4x8 LCD Driver
• Manufacturer: EM Microelectronic

6
The EM6520 has:
- one 4-bit input port ( port A )
- one 4-bit input/output port. ( port B )
Pull resistors can be added to all this ports with metal (Rom version only) and/or register options.
6.1 Ports overview
Table 6.1.1 Input and Output ports overview
Copyright  2002, EM Microelectronic-Marin SA
Port Mode
PA
[3:0]
PB
[3:0]
Input and Output ports
Input
bit-wise
input or
output
option
M: Pull-up
M: Pull-down (default)
R: Pull(up/down) select
R: Debounced or direct
R: + or - for IRQ-edge
R: Input reset
R: CMOS or
R: Pull-down on input
R: Pull-up on input
Mask(M:) or Register(R:)
Nch open drain output
input for IRQ request
and Counter
and Counter
combination
Function
-Input
-Bit-wise interrupt request
-Software test variable
-PA[3],PA[0] input for the
-PA[3] input for the
-Port A reset inputs
-Input or Output
-PB[3] for the PWM output
-PB[2:0] for the ck[16,12,1]
-Tristate output
- PB[0] dynamic input
event counter
millisecond counter
output
conditional jump
comparator
13
Bitwise Multi-Function on Ports
Counter
stop of
PA[3]
PB[3]
output
10 bit
Event
start /
PWM
clock
MSC
www.emmicroelectronic.com
PB[2]
PA[2]
output
ck[1]
-
-
EM6520
PB[1]
PA[1]
output
ck[12]
-
-
03/02 REV. D/449
Counter
Comp.
PA[0]
PB[0]
output
ck[16]
Event
10 bit
clock
input
-