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UPD17145 Datasheet(PDF) 6 Page - NEC

Part No. UPD17145
Description  SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
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Maker  NEC [NEC]
Homepage  http://www.nec.com/
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UPD17145 Datasheet(HTML) 6 Page - NEC

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6
µPD17145(A1), 17147(A1), 17149(A1)
CONTENTS
1.
PIN ..................................................................................................................................... 9
1.1. Pin Function ..................................................................................................................................... 9
1.2
Equivalent Circuit of Pin ............................................................................................................... 11
1.3
Handling of Unused Pins .............................................................................................................. 15
1.4
Note on Using RESET and P0F0/RLS Pins ............................................................................... 16
2.
PROGRAM MEMORY (ROM) ...................................................................................... 17
2.1
Configuration of Program Memory .............................................................................................. 17
3.
PROGRAM COUNTER (PC) ....................................................................................... 18
3.1
Configuration of Program Counter .............................................................................................. 18
3.2
Operation of Program Counter .................................................................................................... 18
4.
STACK ........................................................................................................................... 19
4.1
Configuration of Stack .................................................................................................................. 19
4.2
Stack Function ............................................................................................................................... 19
5.
DATA MEMORY (RAM) ............................................................................................... 20
5.1
Configuration of Data Memory ..................................................................................................... 20
6.
GENERAL REGISTER (GR) ........................................................................................ 21
6.1
General Register Pointer (RP) ..................................................................................................... 21
7.
SYSTEM REGISTER (SYSREG) ................................................................................ 22
7.1
Configuration of System Register ............................................................................................... 22
8.
REGISTER FILE (RF) .................................................................................................. 24
8.1
Configuration of Register File ...................................................................................................... 24
8.2
Function of Register File .............................................................................................................. 25
9.
DATA BUFFER (DBF) ................................................................................................. 26
9.1
Configuration of Data Buffer ........................................................................................................ 26
9.2
Function of Data Buffer ................................................................................................................ 27
10.
ALU BLOCK .................................................................................................................. 28
10.1 Configuration of ALU Block .......................................................................................................... 28
11.
PORTS ........................................................................................................................... 30
11.1 Port 0A (P0A0, P0A1, P0A2, P0A3) .............................................................................................. 30
11.2 Port 0B (P0B0, P0B1, P0B2, P0B3) .............................................................................................. 31
11.3 Port 0C (P0C0/ADC0, P0C1/ADC1, P0C2/ADC2, P0C3/ADC3) ................................................... 32
11.4 Port 0D (P0D0/SCK, P0D1/SO, P0D2/SI, P0D3/TM1OUT) ........................................................ 33
11.5 Port 0E (P0E0, P0E1, P0E2, P0E3) .............................................................................................. 34
11.6 Port 0F (P0F0/RLS, P0F1/VREF) ................................................................................................... 34


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