UPD6600A NEC, UPD6600A Datasheet - Page 11

• Manufacturer Part Number: UPD6600A
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION
• Manufacturer: NEC

11.5
is in progress.
11.6
as an input to the LSB of the accumulator; the S-IN pin can be pulled down to the V
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.
current flows internally.
Caution
By going low whenever the carrier frequency is output from the REM pin, the S-OUT pin indicates that communication
The S-OUT pin is CMOS output.
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 through
When the RL A instruction is executed, the MSB is copied to the LSB.
At reset (all cleared), the S-IN pin goes into a high-impedance state.
S-OUT PIN
S-IN PIN (D
The PD6123 is not provided with an S-IN pin.
0
CY
BIT OF P
1
Figure 11-3. Configuration of the S-IN Pin
)
A
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 within
PD6124A, 6600A
S-IN
11