UPD75216ACW

Manufacturer Part NumberUPD75216ACW
Description4-BIT SINGLE-CHIP MICROCOMPUTER
ManufacturerNEC
UPD75216ACW datasheet
 


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Legend for operation description

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Legend for operation description

A
: A register; 4-bit accumulator
B
: B register
C
: C register
D
: D register
E
: E register
H
: H register
L
: L register
X
: X register
XA
: Register pair (XA); 8-bit accumulator
BC
: Register pair (BC)
DE
: Register pair (DE)
HL
: Register pair (HL)
XA’
: Expanded register pair (XA’)
BC’
: Expanded register pair (BC’)
DE’
: Expanded register pair (DE’)
HL’
: Expanded register pair (HL’)
PC
: Program counter
SP
: Stack pointer
CY
: Carry flag; Bit accumulator
PSW
: Program status word
MBE
: Memory bank enable flag
RBE
: Register bank enable flag
PORTn
: Port n (n = 0 to 6)
IME
: Interrupt master enable flag
IPS
: Interrupt priority select register
IE
: Interrupt enable flag
RBS
: Register bank select register
MBS
: Memory bank select register
PCC
: Processor clock control register
: Address and bit delimiter
(
)
: Contents addressed by
H
: Hexadecimal data
PD75216A
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