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| Part Number | ZLP12840S2028G | ZLP12840S2828G | ZLP12840H2028G | ZLP12840P2028G | 
|---|---|---|---|---|
| Manufacturer | 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 | 
| Core Processor | Z8 LXM | Z8 LXM | Z8 LXM | Z8 LXM | 
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 
| Speed | 8MHz | 8MHz | 8MHz | 8MHz | 
| Connectivity | UART/USART | UART/USART | UART/USART | UART/USART | 
| Peripherals | Brown-out Detect/Reset, HLVD, POR, WDT | Brown-out Detect/Reset, HLVD, POR, WDT | Brown-out Detect/Reset, HLVD, POR, WDT | Brown-out Detect/Reset, HLVD, POR, WDT | 
| Number of I/O | 16 | 24 | 16 | 16 | 
| Program Memory Size | 128KB (128K x 8) | 128KB (128K x 8) | 128KB (128K x 8) | 128KB (128K x 8) | 
| Program Memory Type | OTP | OTP | OTP | OTP | 
| EEPROM Size | - | - | - | - | 
| RAM Size | 1K x 8 | 1K x 8 | 1K x 8 | 1K x 8 | 
| Voltage - Supply (Vcc/Vdd) | 2V ~ 3.6V | 2V ~ 3.6V | 2V ~ 3.6V | 2V ~ 3.6V | 
| Data Converters | - | - | - | - | 
| Oscillator Type | Internal | Internal | Internal | Internal | 
| Operating Temperature | 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 | Through Hole | 
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) | 20-SSOP (0.209", 5.30mm Width) | 20-DIP (0.300", 7.62mm) | 
| Supplier Device Package | 20-SOIC | 28-SOIC | 20-SSOP | 20-PDIP |