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| Part Number | TMS320C6421ZDUL | TMS320C6424ZDUL | TMS320C6421ZDU4 | TMS320C6421ZDU5 | TMS320C6421ZDU6 | TMS320C6421ZDU7 | 
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | 
| Product Status | Active | Obsolete | Active | Active | Obsolete | Active | 
| Type | Fixed Point | Fixed Point | Fixed Point | Fixed Point | Fixed Point | Fixed Point | 
| Interface | HPI, I²C, McASP, McBSP, UART, 10/100 Ethernet MAC | EBI/EMI, HPI, I²C, McASP, McBSP, UART, 10/100 Ethernet MAC | HPI, I²C, McASP, McBSP, UART, 10/100 Ethernet MAC | HPI, I²C, McASP, McBSP, UART, 10/100 Ethernet MAC | HPI, I²C, McASP, McBSP, UART, 10/100 Ethernet MAC | HPI, I²C, McASP, McBSP, UART, 10/100 Ethernet MAC | 
| Clock Rate | 400MHz | 400MHz | 400MHz | 500MHz | 600MHz | 700MHz | 
| Non-Volatile Memory | ROM (64kB) | ROM (64kB) | ROM (64kB) | ROM (64kB) | ROM (64kB) | ROM (64kB) | 
| On-Chip RAM | 96kB | 240kB | 96kB | 96kB | 96kB | 96kB | 
| Voltage - I/O | 1.8V, 3.3V | 1.8V, 3.3V | 1.8V, 3.3V | 1.8V, 3.3V | 1.8V, 3.3V | 1.8V, 3.3V | 
| Voltage - Core | 1.05V, 1.20V | 1.05V, 1.20V | 1.05V, 1.20V | 1.05V, 1.20V | 1.05V, 1.20V | 1.05V, 1.20V | 
| Operating Temperature | 0°C ~ 90°C (TJ) | 0°C ~ 90°C (TJ) | 0°C ~ 90°C (TJ) | 0°C ~ 90°C (TJ) | 0°C ~ 90°C (TJ) | 0°C ~ 90°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | 376-BBGA Exposed Pad | 376-BBGA Exposed Pad | 376-BBGA Exposed Pad | 376-BBGA Exposed Pad | 376-BBGA Exposed Pad | 376-BBGA Exposed Pad | 
| Supplier Device Package | 376-BGA (23x23) | 376-BGA (23x23) | 376-BGA (23x23) | 376-BGA (23x23) | 376-BGA (23x23) | 376-BGA (23x23) |