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Last update: 4 January 2004

IC number:5C01A
IC function:Real-time clock with internal RAM
Related components:MSM6242B (RTC used in 16-bit Amigas)

Component documentation
IC numberManufacturerDocumentation
5C01ARicohNot available

Component versions
IC numberPackageCBM part numberCBM part description
RP5C01A18-pin DIP390525-01IC, Ricoh, Real Time Clock, RP5C01, DIP
RF5C01A18-pin SOP391557-01IC, Ricoh, RTC, RF5C01A, SM

Positions
AmigaPositionPackage
A3000U190DIP
A3000TU190DIP
A4000U178DIP
A4000TU180DIP
A1200U9 (not installed)SOP

Pinout
PinTypeNameSignal name
A3000, A3000TA4000A4000TA1200
1Input_CSGNDGND via R181GND via R180D_RTC_CS
2InputCS_FAIL_PWR_BAD
3InputADJGNDGND via R917
4..7InputA0..A3A2..A5 via U195A2..A5 via U177A2..A5 via U181A2..A5
8Input_RD_RTCR_IORD
9PowerGNDGND
10Input_WR_RTCW_IOWR
11..14I/OD0..D3D16..D19D0..D3
15Output_ALARMunused
16InputOSCINconnected to Y190connected to Y176connected to Y180connected to Y9
17OutputOSCOUT
18PowerVccconnected to BT190connected to BT176connected to BT180 and CN180connected to BT9

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