UPD61P24CS NEC, UPD61P24CS Datasheet - Page 16

• Manufacturer Part Number: UPD61P24CS
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION
• Manufacturer: NEC

16. MASK OPTIONS (PLA DATA)
16
The following items are fixed by mask option:
• K
• Carrier duty selection (1/3) at f
• Hang-up detection provided
<1> K
<2> HALT release condition specification (S-IN, K
K
I
, S-IN pin pull-down resistor provided
I/O
The system is reset when the hang-up detection K
K
To use a pin as a key source of the switch, turn ON the switch with PLA data.
The system is reset if S-IN and K
not to be used (“1”). K
I/O
I/O
input/output selection
ALL
pins are in the input mode in the oscillation stop HALT mode or if even one of the K
K
K
K
K
K
K
K
K
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
output signal
output signal
output signal
output signal
output signal
output signal
output signal
output signal
Figure 16-1. Hang-up Detection K
I
is used (“0”).
OSC
/12
I/O
are used in the HALT mode when S-IN and K
I/O
, K
I/O
I/O
I
)
ALL switch is set to ON (“1”) by PLA data and if the
ALL Configuration Diagram
PLA hang-up
detection
K
I/O
ALL switch
V
DD
I/O
are specified by PLA data
To RESET circuit
I/O
pins is low.
PD61P24