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UPD6600AGS Datasheet

  • UPD6600AGS

  • 4-BIT SINGLE-CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMI...

  • 36頁(yè)

  • NEC   NEC

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碌
PD6124A, 6600A
SWITCH FOR DATA
(1)
Pull-down resistor
When 0 ... Not provided (OFF)
When 1 ... Provided (ON)
Modulation duty (at f
OSC
/12)
When 0 ... 1/2 duty
When 1 ... 1/3 duty
Hang-up detection
<1> K
I/O
ALL
If the switch for hang-up detection K
I/O
ALL is set to ON (1) by mask option, the system is reset if, in oscillation
HALT (STOP) mode, the K
I/O
pin is in input mode, or if at least one of the K
I/O
pins is low (AC pin discharge
mode).
When 0 ... No reset function (OFF)
When 1 ... Reset function (ON)
Caution
To use a pin as a key source of a key matrix, be sure to set the switch to ON by mask option.
(2)
(3)
Figure 17-1. Hang-up Detection K
I/O
ALL Configuration Diagram
K
I/O0
output signal
K
I/O1
output signal
K
I/O2
output signal
K
I/O3
output signal
K
I/O4
output signal
K
I/O5
output signal
K
I/O6
output signal
K
I/O7
output signal
Hang-up detection
K
I/O
ALL switch
(Mask option)
To RESET circuit
V
DD
K
I/O
input/output selection
<2> HALT releasing condition specification (S-IN, K
I/O
, K
I
)
If the condition specified by mask option to be unused is satisfied in the HALT mode, the system is reset.
When 0 ... Used
When 1 ... Unused
Caution
Be sure to specify the HALT mode of the unused releasing condition to be unused (set).
18

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