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PD64A датащи(PDF) 13 Page - Renesas Technology Corp

номер детали PD64A
подробное описание детали  4-BIT SINGLE-CHIP MICROCONTROLLERS FOR INFRARED REMOTE CONTROL TRANSMISSION
PDF  66 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

PD64A датащи(HTML) 13 Page - Renesas Technology Corp

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11
µPD64A, 65
Data Sheet U14380EJ3V0DS00
Figure 2-4. Data Memory Configuration
2.6 Data Pointer (DP): 11 Bits
The ROM data table can be referenced by setting the ROM address in the data pointer to call the ROM contents.
The lower 8 bits of the ROM address are specified by R0 of the data memory; and the higher 3 bits by bits 4,
5, and 6 of the P3 register (CR0).
After reset, the pointer contents become “000H”.
Figure 2-5. Data Pointer Configuration
Note Set DP10 of the
µPD64A to 0.
2.7 Accumulator (A): 4 Bits
The accumulator, which is a register consisting of 4 bits, plays a leading role in performing various operations.
After reset, the accumulator contents are left undefined.
Figure 2-6. Accumulator Configuration
A3
A2
A1
A0
A
R00
DP9
DP8
DP7
DP6
DP5
DP4
DP3
DP2
DP1
DP0
R10
R0
b4
b5
P3 register
P3
DP10
b6
Note
R1n (Higher 4 bits) R0n (Lower 4 bits)
R0
DP (refer to 2.6 Data Pointer (DP))
R10
R00
R11
R01
R12
R02
R13
R03
R14
R04
R15
R05
R16
R06
R17
R07
R18
R08
R19
R09
R1A
R0A
R1B
R0B
R1C
R0C
R1D
R0D
R1E
R0E
R1F
R0F
R1
R2
R3
R4
R5
R6
R7
R8
R9
RA
RB
RC
RD
RE
RF
ASR (refer to 2.3 Address Stack Register (ASR (RF)))



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