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PDF UPD77P25 Data sheet ( Hoja de datos )
| Número de pieza | UPD77P25 | |
| Descripción | Digital Signal Processor | |
| Fabricantes | NEC Electronics | |
| Logotipo |  |
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,. NEC Electronics Inc.
ADVANCE
PRODUCT
INFORMATION
NEC
August 1987
fJ,PD77C25/
fJ,PD77P25
Digital Signal Processor
Data Sheet
lhe information contained in this document is being issued in advance of lhe production cycle for the device. lhe
parameters for the device may change bafore final production ar NEC Electronics Inc., aI ils own discretion. may
withdraw lhe device prior to production.
lhe informatian in this document ;5 subject to change without notice. NEC Electron ics Inc. assumes no
responsibility for any errors ar omissions Ihat may appear in this document. Oevices sold by NEC Electronics Inc.
are covered by lhe warranty and patant indemnification provisions appearing in NEC Electronics Inc. Terms and
Conditions of Sale only. NEC Electronics Inc. makes no warranty , express, statulory, implied, or by c:Iescriplion,
regarding lhe inlormalion sei forth herein or regarding lhe freedom 01 lhe described devices Irom palenl
infringemenl. NEC Ele ctronics Inc. makes no warranty of merchantability or filness lor any purpos8. NEC
Electronics Inc. makes no comm itment lo updale or lo keep currenl the inlormalion contained in this documenl. No
part of this document may be cop ied or reproduced in any form or by any means without the prior written consen! of
NEC Electronics Inc.
Fabio Montoro
1 page  
uPD77C25mp25
DIGITAL SIGNAL PROCESSOR
Pin Configurations
2S-Pln DiP. Plastlc or Ceramic
NelVpplVDD 11]
l5ei
DRQ
VDD
Ao
Ci
Pu Jf6
P, R
Do SORQ
D, 50
D2 SI
D3 iõiN
De lfIR
Ds SeK
D6 INT
D7 RST
GND eLK
Not••:
[1] No connectlon: 77e20A, 7720A
MUI' be connected for EPROM v.,.lon; conlult 77P20 lpeclftClltlon••
49-00I&UA
44-Pln PLCC
ro U c c
Uz~o!CQUCZc»UOz cCIuJzU
Ne
P1
D,
D2
D3
De
Ne
Ds
Ne
UZ &8Q~Q~UZ~dta;:uZ~_~~
Ne
Im
WA
SORO
50
Ne
SI
Ne
em
IIIA
Ne
Pln Identlflcatlon
Symbol
Ao
CU<
cs
00 .0.,
DACK
ORO
INT
Po·P,
RD
RST
SCK
SI
StEN
SO
SOEN
SORQ
WR
GND
Vcc
NCNpp/Vcc
Functlon
S1atuIIdIIa fllglItIr IeIeclIrlput
Slnglf.phae mllter cIock II1Mft
~ MIect Inpul
lb'. . . . 110 dllalM
DMA requ.t ~ Input
DMA rlqu.t 0UIpUt
Interrupt Input
GInerrJ putpaM ovtput contJaIln.
ANd cantroIlIgnalll1Mft
AeMtIr1M
SerIal data 110 c::Iock ~
SerIal data Input
SerIaIlf1:IUt MIbIe If1:IUt
~.... data..,.
SerIal 0UIpUt enIbIe 1f1)Ut
SerIal da outpUl rlquelt
WrftI contraIlIgnallf1)Ut
Ground
.a v pcMIr lUPPfr
No oonnecIIan an 77C25.
~ pcMIII' q,ut (+12.5 V) for
77P25; cannICIId 10 +& Vlar nomIII
aperItIon al77P25
4
5 Page 
uPD77C25mp25
DIGITAL SIGNAL PROCESSOR
------------------------------------------------------------------
~.
Figure 2. Serial 1/0 Tlmlng
SCK
~A
.B
SORO
SõEN
Output
Data
I
J
I \---------
\'-----------.iJ12----------....I1 - - - - ---
HlghZ
( X"""",,-__(Not.')
o
X XX,-_~2_~~-~ -1301-'S - -140-r6 - 150r7 ):'J"\~,-_--H_l_gh_Z _
,------------------,(NOI.3)
, (Nat Data Set) ,
,, ---,,
=::X___X ~:=x XInputData
(Nole2J
o
X'-_--JX
2
1301'S
X X1401'6
1501'7
I\~---_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ J
n
Nol. .:
(1) Dm ctodced OUI on felll", edge of SCK.
(2) Da.. Clodled In on flt.t", edll. of SCK.
(3) Broken llne denol.. conMCUtlve ..ndlng oI nell dala.
X
L
Parallell/O
The a-bit paraUel VO port may be used for transferring data or reading the SPI+'s status, as shown in table 2. Data
transfer is handled through a 16-bit data register (DR) that is software configurable for double- or single-byte data
transfers. The port is ideally suited for operating with 8080, 8085, and 8086 processor buses and may be
used with other processors and computer systems.
.
10
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet UPD77P25.PDF ] | |
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