| PartNumber | CDP68HC68T1EZ | CDP68HC68T1M | CDP68HC68T1E |
| Description | Real Time Clock W/ANNEAL PERIPH SPIA L-TIME-CLK IND | Real Time Clock PERIPH SPIAL-TIME- CLK 20W IND | Real Time Clock PERIPH SPIAL-TIME- CLK IND |
| Manufacturer | Renesas Electronics | Intersil | Intersil |
| Product Category | Real Time Clock | Clock/Timing - Real Time Clocks | Clock/Timing - Real Time Clocks |
| RoHS | Y | - | - |
| Mounting Style | Through Hole | - | - |
| Package / Case | PDIP-16 | - | - |
| RTC Bus Interface | Serial, SPI | - | - |
| Date Format | DW:DM:M:Y | YY-MM-DD-dd | YY-MM-DD-dd |
| Time Format | HH:MM:SS (12 hr, 24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) |
| Battery Backup Switching | Backup Switching | - | - |
| RTC Memory Size | 32 B | - | - |
| Supply Voltage Max | 6 V | - | - |
| Supply Voltage Min | 3 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Packaging | Tube | Tube | Tube |
| Function | Calendar, Clock | - | - |
| Height | 4.95 mm (Max) | - | - |
| Length | 19.68 mm (Max) | - | - |
| Product | Real Time Clocks | - | - |
| Series | CDP68HC68T1 | - | - |
| Width | 7.11 mm (Max) | - | - |
| Brand | Renesas / Intersil | - | - |
| Product Type | Real Time Clock | - | - |
| Factory Pack Quantity | 25 | - | - |
| Subcategory | Clock & Timer ICs | - | - |
| Unit Weight | 0.035274 oz | - | - |
| Type | - | Clock/Calendar | Clock/Calendar |
| Package Case | - | 20-SOIC (0.295", 7.50mm Width) | 16-DIP (0.300", 7.62mm) |
| Operating Temperature | - | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | - | Surface Mount | Through Hole |
| Features | - | Alarm, Leap Year, Square Wave Output, Watchdog Timer | Alarm, Leap Year, Square Wave Output, Watchdog Timer |
| Interface | - | SPI | SPI |
| Voltage Supply | - | 3 V ~ 6 V | 3 V ~ 6 V |
| Supplier Device Package | - | 20-SOIC W | 16-PDIP |
| Memory Size | - | 32B | 32B |
| Voltage Supply Battery | - | 2.2 V ~ 6 V | 2.2 V ~ 6 V |
| Current Timekeeping Max | - | 20μA ~ 500μA @ 5V | 20μA ~ 500μA @ 5V |