TimeDisk
garrettsworkshop
Apple II memory expansion card with 1 MB battery-backed RAM and NoSlotClock-compatible clock
Components (26)
| Reference | Value | Description |
|---|---|---|
| Q1 | AO3401A | |
| U1 | EPM7128SL84 | |
| U2 | DS1315S-5 | |
| U3 | 74LVC04AD | |
| U4 | AS6C8008 | |
| U5 | 39F040 | |
| U6 | XC6206P332MR | |
| U7 | CH340G | |
| U8 | 74LVC1G74DP | |
| BT1 | CR2032 | |
| C1-C22,C26-C29 | 2u2 | |
| C23,C24 | 22p | |
| C25 | 100n | |
| D1,D2 | BAT54H | |
| D3 | 6V8 | |
| FID1-FID5 | Fiducial | |
| J1 | AppleIIBus | |
| J2 | microUSB | |
| J3 | JTAG | |
| R1-R3 | 4k7 | |
| R4,R5 | 22 | |
| R7,R8 | 680 | |
| R9,R10 | DNP | |
| SW1 | Mode | |
| Y1 | 32k768 | |
| Y2 | 12M |