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PIC16C74B Datasheet(PDF) 7 Page - Microchip Technology |
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PIC16C74B Datasheet(HTML) 7 Page - Microchip Technology |
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7 / 184 page  2000 Microchip Technology Inc. DS30605C-page 7 PIC16C63A/65B/73B/74B 2.0 PIC16C63A/65B/73B/74B DEVICE VARIETIES A variety of frequency ranges and packaging options are available. Depending on application and production requirements, the proper device option can be selected using the information in the PIC16C63A/65B/73B/74B Product Identification System section at the end of this data sheet. When placing orders, please use that page of the data sheet to specify the correct part number. For the PIC16C7X family, there are two device “types” as indicated in the device number: 1. C, as in PIC16C74. These devices have EPROM type memory and operate over the standard voltage range. 2. LC, as in PIC16LC74. These devices have EPROM type memory and operate over an extended voltage range. 2.1 UV Erasable Devices The UV erasable version, offered in windowed CERDIP packages, is optimal for prototype development and pilot programs. This version can be erased and reprogrammed to any of the oscillator modes. Microchip's PICSTART Plus and PRO MATE II programmers both support programming of the PIC16C63A/65B/73B/74B. 2.2 One-Time-Programmable (OTP) Devices The availability of OTP devices is especially useful for customers who need the flexibility for frequent code updates and small volume applications. The OTP devices, packaged in plastic packages, per- mit the user to program them once. In addition to the program memory, the configuration bits must also be programmed. 2.3 Quick-Turnaround-Production (QTP) Devices Microchip offers a QTP Programming Service for fac- tory production orders. This service is made available for users who choose not to program a medium to high quantity of units and whose code patterns have stabi- lized. The devices are identical to the OTP devices but with all EPROM locations and configuration options already programmed by the factory. Certain code and prototype verification procedures apply before produc- tion shipments are available. Please contact your local Microchip Technology sales office for more details. 2.4 Serialized Quick-Turnaround Production (SQTPSM) Devices Microchip offers a unique programming service where a few user-defined locations in each device are pro- grammed with different serial numbers. The serial num- bers may be random, pseudo-random or sequential. Serial programming allows each device to have a unique number, which can serve as an entry code, password or ID number. |
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