UPD75518 NEC, UPD75518 Datasheet - Page 148

• Manufacturer Part Number: UPD75518
• Description: 4 BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC

148
(2) Legend
A
B
C
D
E
H
L
X
XA
BC
DE
HL
XA’
BC’
DE’
HL’
PC
SP
CY
PSW : Program status word
MBE
RBE
PORTn: Port n (n = 0 to 15)
IME
IPS
IE
RBS
MBS : Memory bank select register
PCC
.
(
H
)
: A register, 4-bit accumulator
: B register, 4-bit accumulator
: C register, 4-bit accumulator
: D register, 4-bit accumulator
: E register, 4-bit accumulator
: H register, 4-bit accumulator
: L register, 4-bit accumulator
: X register, 4-bit accumulator
: Register pair (XA), 8-bit accumulator
: Register pair (BC), 8-bit accumulator
: Register pair (DE), 8-bit accumulator
: Register pair (HL), 8-bit accumulator
: Extended register pair (XA’)
: Extended register pair (BC’)
: Extended register pair (DE’)
: Extended register pair (HL’)
: Program counter
: Stack pointer
: Carry flag, bit accumulator
: Memory bank enable flag
: Register bank enable flag
: Interrupt master enable flag
: Interrupt priority specification register
: Interrupt enable flag
: Register bank select register
: Processor clock control register
: Address/bit delimiter
: Contents addressed by
: Hexadecimal data
PD75518(A)