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| Part Number | DS87C520-QCL+ | DS87C520-QNL+ | DS87C530-QCL+ | DS87C550-QCL+ | DS87C520-ECL+ | DS87C520-MCL+ | DS87C520-QCL |
|---|---|---|---|---|---|---|---|
| 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 | Analog Devices Inc./Maxim Integrated |
| Product Status | Active | Active | Active | Obsolete | Active | Active | Obsolete |
| Core Processor | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| Speed | 33MHz | 33MHz | 33MHz | 33MHz | 33MHz | 33MHz | 33MHz |
| Connectivity | EBI/EMI, SIO, UART/USART | EBI/EMI, SIO, UART/USART | EBI/EMI, 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, PWM, WDT | Power-Fail Reset, WDT | Power-Fail Reset, WDT | Power-Fail Reset, WDT |
| Number of I/O | 32 | 32 | 32 | 55 | 32 | 32 | 32 |
| Program Memory Size | 16KB (16K x 8) | 16KB (16K x 8) | 16KB (16K x 8) | 8KB (8K x 8) | 16KB (16K x 8) | 16KB (16K x 8) | 16KB (16K x 8) |
| Program Memory Type | OTP | OTP | OTP | OTP | OTP | OTP | OTP |
| EEPROM Size | - | - | - | - | - | - | - |
| RAM Size | 1K x 8 | 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 | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Data Converters | - | - | - | A/D 6x10b | - | - | - |
| Oscillator Type | External | External | External | External | External | External | External |
| Operating Temperature | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Through Hole | Surface Mount |
| Package / Case | 44-LCC (J-Lead) | 44-LCC (J-Lead) | 52-LCC (J-Lead) | 68-LCC (J-Lead) | 44-TQFP | 40-DIP (0.600", 15.24mm) | 44-LCC (J-Lead) |
| Supplier Device Package | 44-PLCC (16.59x16.59) | 44-PLCC (16.59x16.59) | 52-PLCC (19.13x19.13) | 68-PLCC (24.23x24.23) | 44-TQFP (10x10) | 40-PDIP | 44-PLCC (16.59x16.59) |
