Sharp MD-SR50HBL Service Manual page 36

MD-SR50H/50W/60E/60W
IC401 RH-iX0341AWZZ: System Microcomputer (IX0341AW) (2/3)
Terminal Name Input/Output
Pin No. Port Name
58 MD1 MD1
59 P23 _PLAY
60 WDTOVF WDTOVF
61 MD2 MD2
62 RES _RESET
63 NMI _NMI
64 STBY _STBY
65 Vcc VCC
66 XTAL XTAL
67 EXTAL EXTAL
68 Vss VSS
69 PF7 _DCEXT
70 PF6 PCNT2
71 PF5 PCNT1
72 PF4 RCPCNT
73 PF3 _DINT
74 PF2 _ARQD
75 PF1 _RPLAY
76 IRQ0 _ARQK
77 AVcc AVCC
78 Vref VREF
79 AN0 PLVBAT
80 AN1 PLCHK
81 AN2 HKEY2
82 AN3 HKEY1
83 AN4 RKEY
84 AN5 TEMP
85 AN6 CHGCNT
86 DA1 LDVAR
87 AVss AVSS
88 Vss VSS
89 P24 PLVOW
90* TIOCB4 MCMON
91* P26 P26
92 P27 PLVGN
93 PG0 CHGON
94 PG1 JPNP
95 PG2 _KHOLD
96 PG3 LDON
97 PG4 OPICGA
98 Vcc VDD
99 P10 DCNT
100 P11 HDON
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Input Operation mode selection input 1
Input Unit PLAY button operation detection input
Output Watch dog timer (not used)
Input Operation mode selection input 2
Input Microcomputer hard reset input
Input Nonmaskable interruption (not used)
Input Microcomputer standby input (not used)
— Positive power supply
— Crystal connection terminal
— Crystal connection terminal
— Ground potential
Input DC-IN detection input
Output Vcc supply control output of power IC
Output Vref supply control output of power IC
Input/Output Record cir cuit power control output
Input System LSI interruption
Input Disk cap opens and closes detection/it is started and required
Input Remote control PLAY key operation detection
Input It is started by the button input, requirement
— A/D and D/A converter positive power supply
— A/D and D/A converter reference voltage
Input Battery voltage detection input
Input Power supply circuit abnormal detection input
Input Unit key operation detection input 2
Input Unit key operation detection input 1
Input Remote control key operation detection
Input Ambient temperature detection inputinput
Output Charging current control output
Output P.U. laser power setting output
— A/D and D/A converter ground potential
— Ground potential
Output Battery voltage measurement
Output Internal openation status monitor
Output Spare
Output Battery voltage detection gain select output
Output Ni-MH Battery charge ON output
Input Kana conversion/Kana input existencel nonexistence discrimination
Input Unit key hold switch input
Output P.U. laser ON/OFF control output
Output P.U. detection sensitivity switching output
— Positive power supply
Output Mechanism driver enable output
Output Recording head current control output
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Function