Sharp PC-E500S Service Manual page 4

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PC-E500S
| Pin No. | Signal name
i i nip eS ae a re er a SS ue a a tt
KO13 ©
KO12
KO14
KO10
IRQ
oOUT
CE7
CE6
CES
CE4
CE3
CE2
CEt
CEO
oA.
DIS
HA
RD
KO9
2
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| Signal description
SIO RR (Can be received in the main body.)
SIO RS (Main body send request)
Key strobe signal
Low battery detection input pin
(Reserved)
ROM card chip select signal (Active HIGH), 10000~1F FFF
Display chip select signal (Active HIGH), 0O0000~03FFF and 08000~OBFFF
(Reserved)
| Internal ROM chip enable signal, COOOO0~FFFFF
| RAM card chip enable signal, 40000~7FFFF
Internal RAM chip enabie signal, 80000~BFFFF
|
(Reserved)
|
| Key sirobe signal
| SIO RD (Receive data)
| SID SD (Send data)
|
|
CE-140F data input pin
|
i
_ 11 pin DIN, P-ch open output
ae pin DOUT, P-ch open ouipul
| 14 pin [02, P-ch open output
; 11 pin iO1, P-ch open output
| 11 pin ACK
| 11 pin BUSY, P-ch open output
: (Reserved)
- Display power (convertor) contro! signal
, Low battery vailage contro! signal
| SIC CS (Remote station transmission enabie)
| SIOCD (Remoie station send request)
_ | SIO PAK (Reserved)
ee Te
eT et nt RHR |,