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| Part Number | P87C54X2BBD,157 | P87C58X2BBD,157 | P87C654X2BBD,157 | P87C54X2FBD,157 | P87C51X2BBD,157 | P87C52X2BBD,157 |
|---|---|---|---|---|---|---|
| Manufacturer | NXP USA Inc. | Freescale Semiconductor | NXP USA Inc. | NXP USA Inc. | Rochester Electronics, LLC | NXP USA Inc. |
| Product Status | Obsolete | Active | Obsolete | Obsolete | Active | Obsolete |
| Core Processor | 8051 | 8051 | 8051 | 8051 | - | 8051 |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit | - | 8-Bit |
| Speed | 33MHz | 33MHz | 33MHz | 33MHz | - | 33MHz |
| Connectivity | EBI/EMI, UART/USART | EBI/EMI, UART/USART | I²C, UART/USART | EBI/EMI, UART/USART | - | EBI/EMI, UART/USART |
| Peripherals | POR | POR | POR, WDT | POR | - | POR |
| Number of I/O | 32 | 32 | 32 | 32 | - | 32 |
| Program Memory Size | 16KB (16K x 8) | 32KB (32K x 8) | 16KB (16K x 8) | 16KB (16K x 8) | - | 8KB (8K x 8) |
| Program Memory Type | OTP | OTP | OTP | OTP | - | OTP |
| EEPROM Size | - | - | - | - | - | - |
| RAM Size | 256 x 8 | 256 x 8 | 256 x 8 | 256 x 8 | - | 256 x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | - | 2.7V ~ 5.5V |
| Data Converters | - | - | - | - | - | - |
| Oscillator Type | Internal | Internal | Internal | Internal | - | Internal |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | - | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | - | Surface Mount |
| Package / Case | 44-LQFP | 44-LQFP | 44-LQFP | 44-LQFP | - | 44-LQFP |
| Supplier Device Package | 44-LQFP (10x10) | 44-LQFP (10x10) | 44-LQFP (10x10) | 44-LQFP (10x10) | - | 44-LQFP (10x10) |
