UPD6P8 NEC [NEC], UPD6P8 Datasheet - Page 42

• Manufacturer Part Number: UPD6P8
• Description: MOS INTEGRATED CIRCUIT 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION
• Manufacturer: NEC [NEC]

10.2 Circuit Symbol Description
42
A:
ASR:
addr:
CY:
data4:
data8:
data10:
F:
M0:
M00:
M01:
M1:
M10:
M11:
PC:
Pn:
P0n:
P1n:
ROMn:
Rn:
R0n:
R1n:
SP:
T:
T0:
T1:
(×):
Accumulator
Address stack register
Program memory address
Carry flag
4-bit immediate data
8-bit immediate data
10-bit immediate data
Status flag
Modulo register for setting the low-level period
Modulo register for setting the low-level period (lower 4 bits)
Modulo register for setting the low-level period (higher 4 bits)
Modulo register for setting the high-level period
Modulo register for setting the high-level period (lower 4 bits)
Modulo register for setting the high-level period (higher 4 bits)
Program Counter
Port register pair (n = 0, 1, 3, 4)
Port register (lower 4 bits)
Port register (higher 4 bits)
Bit n of the program memory’s (n = 0 to 9)
Register pair
Data memory (General-purpose register; n = 0 to F)
Data memory (General-purpose register; n = 0 to F)
Stack Pointer
Timer register
Timer register (lower 4 bits)
Timer register (higher 4 bits)
Content addressed with ×
Data Sheet U17848EJ3V0DS
µ PD6P8, 6P8A, 6P8B