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| Part Number | DS89C420-ENG | DS89C420-ENL | DS89C420-QNG | DS89C430-ENG | DS89C440-ENG | DS89C450-ENG |
|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Core Processor | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| Speed | 25MHz | 33MHz | 25MHz | 25MHz | 25MHz | 25MHz |
| Connectivity | EBI/EMI, SIO, UART/USART | SIO, UART/USART | EBI/EMI, SIO, UART/USART | EBI/EMI, SIO, UART/USART | EBI/EMI, SIO, UART/USART | EBI/EMI, SIO, UART/USART |
| Peripherals | Power-Fail Reset, WDT | Power-Fail Reset, WDT | Power-Fail Reset, WDT | Power-Fail Reset, WDT | Power-Fail Reset, WDT | Power-Fail Reset, WDT |
| Number of I/O | 32 | 32 | 32 | 32 | 32 | 32 |
| Program Memory Size | 16KB (16K x 8) | 16KB (16K x 8) | 16KB (16K x 8) | 16KB (16K x 8) | 32KB (32K x 8) | 64KB (64K x 8) |
| Program Memory Type | Flash | Flash | Flash | Flash | Flash | Flash |
| EEPROM Size | - | - | - | - | - | - |
| RAM Size | 1K x 8 | 1K x 8 | 1K x 8 | 1K x 8 | 1K x 8 | 1K x 8 |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 5.5V | - | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Data Converters | - | - | - | - | - | - |
| Oscillator Type | External | External | External | External | External | External |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 44-TQFP | 44-TQFP | 44-LCC (J-Lead) | 44-TQFP | 44-TQFP | 44-TQFP |
| Supplier Device Package | 44-TQFP (10x10) | 44-TQFP (10x10) | 44-PLCC (16.59x16.59) | 44-TQFP (10x10) | 44-TQFP (10x10) | 44-TQFP (10x10) |
