參數(shù)資料
型號: UPD70208HGF-12-3B9
廠商: NEC Corp.
英文描述: V40HLTM, V50HLTM 16/8, 16-BIT MICROPROCESSOR
中文描述: V40HLTM,V50HLTM 16 / 8,16位微處理器
文件頁數(shù): 32/110頁
文件大小: 625K
代理商: UPD70208HGF-12-3B9
32
μ
PD70208H, 70216H
Data Sheet U13225EJ4V0DS00
11. ICU (INTERRUPT CONTROL UNIT)
The ICU arbitrates among up to 8 interrupt requests (maskable interrupts) generated inside and outside the V40HL and
V50HL, and transfers one of them to the CPU. The ICU functions comprise the functions of the V40HL and V50HL minus
those functions not required by the V40HL and V50HL.
11.1 FEATURES
8 interrupt inputs
μ
PD71059 cascading possible
Edge- or level-triggered request input
(input from internally connected TCU is edge-triggered only)
Interrupt requests individually maskable
Programmable interrupt request priority order
Polling operation capability
11.2 ICU INTERNAL BLOCK DIAGRAM
Notes 1.
A0 or A1 (Set by a system I/O area register)
2.
A1 or A2 (Set by a system I/O area register)
IORD
IOWR
Note 1
Note 2
ICU Selection Signal
Read/Write
Control
Initialize &
Command Word
Register Group
Slave Control
Control Logic
Interrupt
In-Service
Register
(IIS)
Priority
Determina-
tion Logic
Interrupt
Mask
Register
(IMK)
Interrupt
Request
Register
(IRQ)
External Pins
Internal Data Bus
SA0
SA1
SA2
A8
A9
A10
INTP1
INTP2
INTP3
INTP4
INTP5
INTP6
INTP7
INTL1
INTL2
INTL3
INTL4
INTL5
INTL6
INTL7
INTL0
To BIU
INTAK (From CPU)
INT (To CPU)
TOUT0 (From TCU)
SINT (From SCU)
TOUT1 (From TCU)
SW
SW
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