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ZLP12840 数据表(PDF) 18 Page - Zilog, Inc. |
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ZLP12840 数据表(HTML) 18 Page - Zilog, Inc. |
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18 / 58 page ![]() PS024406-0106 P R E L I M I N A R Y Pin Description ZLP12840 OTP MCU Product Specification 7 Table 4 identifies the functions and signal direction of each pin within the 20-pin PDIP, SOIC, and SSOP packages by function. Table 4. ZLP12840 MCU 20-Pin PDIP/SOIC/SSOP Functional Pin Identification Pin # Symbol Function Direction 131 P00 Port 0, bit 0 Input/Output P30 Port 3, bit 0 Input 14 P01 Port 0, bit 1 Input/Output 4 P07 Port 0, bit 7 Input/Output 16 P20 Port 2, bit 0 Input/Output 17 P21 Port 2, bit 1 Input/Output 18 P22 Port 2, bit 2 Input/Output 19 P23 Port 2, bit 3 Input/Output 20 P24 Port 2, bit 4 Input/Output 1 P25 Port 2, bit 5 Input/Output 2 P26 Port 2, bit 6 Input/Output 3 P27 Port 2, bit 7 Input/Output 8 P31 Port 3, bit 1 Input 9 P32 Port 3, bit 2 Input 10 P33 Port 3, bit 3 Input 11 P34 Port 3, bit 4 Output 12 P36 Port 3, bit 6 Output 5VDD Power Supply 15VSS Ground 7 XTAL1 Crystal oscillator Input 6 XTAL2 Crystal oscillator Output Note: When the Port 0 high-nibble pull-up option is enabled and the P30 input is Low, current flows through the pull-up to Ground. |
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