PIC16C58A PIC16C58B Migration DEVICE MIGRATIONS This document is intended to describe the functional differences and the electrical specification differences that are present when migrating from one device to the next. Note: Even though compatible devices are specified to be tested to the same electrical specification, the characteristics of the devices may be different from each other (due to process differences). For systems that were designed to the device specifications, these process differences should not cause any issues in the application. For systems that did not tightly meet the electrical specifications, the process differences may cause the device to behave differently in the application. Table 1 shows the considerations that must be taken into account when migrating from the PIC16C58A to the PIC16C58B. TABLE 1: PIC16C58A PIC16C58B DIFFERENCES Functional Differences No. Difference H/W S/W Prog. 1 Master Clear Filter added, PIC16C58B. See Electrical Specification #30 -- -- 2 Code protection change, PIC16C58B now reads as 0 when code protect enabled -- -- 3 Programming algorithm change, PIC16C58B uses a new programming algorithm -- -- 1999 Microchip Technology Inc. DS41118A-page 1 Electrical Specification Differences Parm. No. PIC16C58A Data Sheet Sym. VDD IDD IPD VIL VIH PIC16C58B Data Sheet Characteristic Units Conditions Min Typ Max Min Typ Max Supply Voltage XT, RC, and LP Options HS option 3.0 4.5 -- -- 6.25 5.5 3.0 4.5 -- -- 5.5 5.5 V V Supply Current XT and RC Options HS Option HS Option LP Option, Commercial -- -- -- -- 1.9 2.5 4.7 15 2.5 8.0 17 31 -- -- -- -- 1.8 2.4 4.5 14 2.4 8.0 16 29 mA mA mA A LP Option, Industrial -- 18 39 -- 17 37 A -- -- 5.0 0.3 14 5.0 -- -- 4.0 0.25 14 5.0 A A VDD=3.0 WDT Enabled WDT Disabled VSS -- 2VDD VSS VSS -- -- 0.8 .15VDD V V 4.5VVDD5.5V For all VDD 2.0 0.2VDD+1V -- -- VDD VDD VDD VDD V V V V 4.0VVDD5.5 For all VDD 4.5VVDD5.5V Otherwise Power Down Current Industrial Input Low Voltage I/O Ports FOSC=4.0MHz, VDD=5.5V FOSC=10.0MHz, VDD=5.5V FOSC=20.0MHz, VDD=5.5V FOSC=32KHz, VDD=3.0V WDT Disabled FOSC=32KHz, VDD=3.0V WDT Disabled Input High Voltage 2.0 0.25VDD+.8V DS41118A-page 2 -- -- 1999 Microchip Technology Inc. NOTES: 1999 Microchip Technology Inc. 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