UPD6125AG NEC, UPD6125AG Datasheet - Page 12

• Manufacturer Part Number: UPD6125AG
• Description: 4-BIT SINGLE CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION
• Manufacturer: NEC

11.7 S-OUT Pin
communication is in progress.
11.8 S-IN Pin (D
as an input to the LSB of the accumulator. The S-IN pin can be pulled down to the V
within the LSI. In this state, if the rotate-left accumulator instruction (RL A) is executed, the data on the S-IN pin is
copied to the LSB of the accumulator.
through current flows internally.
12
By going low whenever the carrier frequency is output from the REM pin, the S-OUT pin indicates that
The S-OUT pin is a CMOS output pin.
The S-OUT pin goes high on reset.
To input serial data, use the S-IN pin. When control register (P
If the control register is released from serial input mode, the S-IN pin goes into a high-impedance state, but no
When the RL A instruction is executed, the MSB is copied to the LSB.
When “all clear” is input or on reset, the S-IN pin goes into a high-impedance state.
0
Bit of P
CY
1
)
A
Figure 11-4. The S-IN Pin Organization
3
A
2
A
1
A
0
1
) is set to serial input mode, the S-IN pin is connected
Control
register
SS
level by a mask option from
S-IN
PD6125A, 6126A