參數(shù)資料
型號: S1C88409D
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8.8 MHz, MICROCONTROLLER, UUC108
封裝: DIE-108
文件頁數(shù): 172/250頁
文件大小: 1877K
代理商: S1C88409D
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁當(dāng)前第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁第189頁第190頁第191頁第192頁第193頁第194頁第195頁第196頁第197頁第198頁第199頁第200頁第201頁第202頁第203頁第204頁第205頁第206頁第207頁第208頁第209頁第210頁第211頁第212頁第213頁第214頁第215頁第216頁第217頁第218頁第219頁第220頁第221頁第222頁第223頁第224頁第225頁第226頁第227頁第228頁第229頁第230頁第231頁第232頁第233頁第234頁第235頁第236頁第237頁第238頁第239頁第240頁第241頁第242頁第243頁第244頁第245頁第246頁第247頁第248頁第249頁第250頁
18
EPSON
S1C88409 TECHNICAL MANUAL
CHAPTER 3: CPU AND MEMORY
3.6.2 Address bus
The S1C88409 has a 22-bit external address bus
(A0–A21). The terminals and output circuits of the
address bus A0–A21 are shared with the output
ports R00–R07 (=A0–A7), R10–R17 (=A8–A15) and
R20–R25 (=A16–A21), and the function switches
according to the bus mode setting.
In the single chip mode, the 22-bit terminals are all
set as the output port terminals R00–R07, R10–R17
and R20–R25.
In the expanded 64K mode, 16-bit terminals within
the 22 bits are set as the address bus A0–A15,
while the remaining 6 bits, A16–A21, are set as
output port R20–R25.
In the expanded 4M minimum and maximum
modes, all of the 22-bit terminals are set as the
address bus (A0–A21).
When the address bus is set, the data register and
high impedance control register of each output
port are disconnected from the output circuit and
can be used as general-purpose data registers with
the ability to read/write.
Output
port
Address
bus
R00
R01
R02
R03
R04
R05
R06
R07
R10
R11
R12
R13
R14
R15
R16
R17
R20
R21
R22
R23
R24
R25
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
64K
4M
(max.)
4M
(min.)
64K
Single
chip
Bus mode
Fig. 3.6.2.1 Correspondence between address bus
and output ports
3.6.3 Read (RD)/write (WR) signals
The output terminals and output circuits for the
read (RD)/write (WR) signals are shared with the
output ports R26 and R27, and the function
switches according to the bus mode setting.
In the single chip mode, both the terminals are set
as output port terminals and in other expanded
modes, they are set as read (RD)/write (WR)
signal output terminals. When they are set as read
(RD)/write (WR) signal output terminals, the data
register and high impedance control register for
each output port (R26, R27) are disconnected from
the output circuit and can be used as a general-
purpose data register with the ability to read/
write.
These two signals are output only when the
memory area for the external device is being
accessed. They are not output when the internal
memory is accessed.
Refer to Section 3.6.5, "WAIT control", for the
signal output timing.
Output
port
RD/WR
signal
R26
R27
RD
WR
64K
4M
(max.)
4M
(min.)
Single
chip
Bus mode
Fig. 3.6.3.1 Correspondence between read (RD)/write
(WR) signal and output port
3.6.4 Chip enable (CE) signal
The S1C88409 has a built-in address decoder
which can output up to three chip enable (CE)
signals. Consequently, three devices equipped
with a chip enable (CE) or chip select (CS) terminal
can be directly connected without an external
address decoder.
The three chip enable (CE0–CE2) signal output
terminals and output circuits are shared with
output ports R30–R32. In the expanded modes, the
function, either CE or output port, can indepen-
dently be selected by software according to the
chips to be expanded.
When the chip enable (CE) output is set, the data
register and high impedance control register of the
output port are disconnected from the output
circuit and can be used as general-purpose data
registers with the ability to read/write.
In the single chip mode, they can be used as the
output ports R30–R32.
相關(guān)PDF資料
PDF描述
S1C88816D 8-BIT, MROM, 8.2 MHz, MICROCONTROLLER, UUC164
S1C88832F0A0100 MICROCONTROLLER, PQFP128
S1C88848D0A0100 8-BIT, MROM, 8.2 MHz, MICROCONTROLLER, UUC192
S1C8F360F 8-BIT, FLASH, 8.2 MHz, MICROCONTROLLER, PQFP176
S1D13305F00B 640 X 256 PIXELS CRT CHAR OR GRPH DSPL CTLR, PQFP60
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S1C88649 制造商:EPSON 制造商全稱:EPSON 功能描述:8-bit Single Chip Microcomputer
S1C88650 制造商:EPSON 制造商全稱:EPSON 功能描述:8-bit Single Chip Microcomputer
S1C88655 制造商:EPSON 制造商全稱:EPSON 功能描述:8-bit Single Chip Microcomputer
S1C88816 制造商:EPSON 制造商全稱:EPSON 功能描述:8-bit Single Chip Microcomputer
S1C88848 制造商:EPSON 制造商全稱:EPSON 功能描述:8-bit Single Chip Microcomputer