UPD8156-2 Datasheet PDF - NEC
| Part Number | UPD8156-2 | |
| Description | 2048 BIT STATIC MOS RAM | |
| Manufacturers | NEC | |
| Logo |  |
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There is a preview and UPD8156-2 download ( pdf file ) link at the bottom of this page. Total 8 Pages | ||
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NEe Microcomputers, Inc.
2048 BIT STATIC MOS RAM WITH
1/0 PORTS AND TIMER
NEe
fLPD8155
p.PD8155-2
fLPD8156
fLPD8156-2
OESCR IPTION
The J.LPDB1 55 and J.LPDB1 56 are J.LPDBOB5A family components having 256 X B Static
RAM, 3 programmable I/O ports and a programmable timer. They directly interface
to the multiplexed J.LPD80B5A bus with no external logic. The J.LPDB155 has an active
low chip enable while the J.LPDB1 56 is active high.
FEATURES.256XB·BitStaticRAM
• Two Programmable B·Bit I/O Ports
• One Programmable 6·Bit I/O Port
• Single Power Supplies: +5 Volt, ±10%
• Directly interfaces to the J.LPDB085A and J.LPD8085A·2
• Available in 40 Pin Plastic Packages
PIN CONFIGURATION
PC3
PC4
TIMER IN
RESET
PCs
TIMER OUT
101M
CE/CE*
AD
WR
ALE
ADO
ADl
AD2
AD3
AD4
ADS
AD6
AD7
Vss
IJPD
8155/
8156
*I'PD81S5: CE
I'PD8l56: CE
vcc
PC2
PCl
PCo
PB7
PB6
PBS
PB4
PB3
PB2
PBl
PBo
PA7
PA6
PAS
PA4
PA3
PA2
PAl
PAo
Rev/2
II
537
|
| |
 
TIMING WAVEFORMS
(CaNT.)
BF
'SBF
lNTR
,..,PD815518156
STROBED INPUT MODE
INPUTDATA---------~~~::1-~kr----~------~------------------
FRQMPORT ----------~F----t--~~--------------------------------
STROBED OUTPUT MODE
BF
INTR
'W,
WR
OUTPUTDATA-------------------=::~~::~~~----------------------
TOPORT ____________----------~~------------------------------
BASIC INPUT MODE
FI
AD
NPUT
~,......:;;;:.._"--'PR!._.___...,J
~......----------k=
DATA BUS : : : : : : :x~------
BASIC OUTPUT MODE
=-_~IWP::xDATA BWUR_S::.:-____ '
_-_-_-
OUTPUT _ _ _ _ _ _ _ _ _ _ _ _ _ _-J~----
LOAD
COUNTER
FROM eLA ------t
COUNT 1
TIMER OUTPUT
RELOAD
FC~~~~~~ --1
I0
TlMER.OUT---~~-~~t-~~~-++~-~
(PULSE)
~-------~~~::::~-~
ISO. WAVE1- - - - - - - --
COUNTDOWN FROM 3 TO 0
Icye
UP081SS/8156
320 0$ MIN.
",POBI55·218156·2
200 n$ MIN
'FUSE.IFALL
"'2
'TL
ITH
30"1 MAX.
30"s MAX
80 ns MIN.
40 ns MIN
120"$ MIN.
70 nl MIN:
TIMER·IN to TIMER-OUT LOW ITO SE oeFINEOL
TIMER-IN to TIMER-OUT I-IIGI-I (TO 8E DEFINED).
541
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for UPD8156-2 electronic component. |
| Information | Total 8 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ UPD8156-2.PDF Datasheet ] | |
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