UPD70208HGF-12-3B9 NEC [NEC], UPD70208HGF-12-3B9 Datasheet - Page 22

• Manufacturer Part Number: UPD70208HGF-12-3B9
• Description: V40HLTM, V50HLTM 16/8, 16-BIT MICROPROCESSOR
• Manufacturer: NEC [NEC]

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3. CPU
the use of the bus with on-chip peripherals, but in software terms the CPU is fully compatible.
The CPU has the same functions as the V20HL
The internal block diagram of the CPU is shown in Figure 3-1.
Sub Data Bus
(16)
TC
TA
TB
Q0
Q2
Figure 3-1. Internal Block Diagram of CPU (1/2)
TEMP
ADM
PSW
DS0
DS1
PFP
ALU
CW
DW
AW
BW
PS
SS
DP
PC
BP
SP
SHIFTER
LC
IX
IY
Q1
Q3
Internal Address/Data Bus (20)
Data Sheet U13225EJ4V0DS00
TM
Main Data Bus
and V30HL
(16)
(a) V40HL
TM
. In hardware terms, there are some changes regarding
INSTRUCTION DECODER
T-STATE
CONTROL
CYCLE
DECISION
QUEUE
CONTROL
EFFECTIVE ADDRESS
GENERATOR
INSTRUCTION
CONTROL
SEQUENCE
ROM
INTERRUPT
CONTROL
STANDBY
CONTROL
To BIU
PD70208H, 70216H
29
BCU
EXU
Micro Data Bus
NMI
INT
(From ICU)
CLOCK
(From CG)