PIC16F57-I/P Microchip Technology, PIC16F57-I/P Datasheet
PIC16F57-I/P
Specifications of PIC16F57-I/P
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PIC16F57-I/P Summary of contents
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... RB7 ICSPDAT MCLR/V Program/Verify mode Legend Input Output Power Note 1: In the PIC16F57, the programming high voltage is internally generated. To activate the Program/Verify mode, high voltage of I IHH © 2007 Microchip Technology Inc. Pin Diagrams PDIP, SOIC T0CKI N/C RA0 RA1 ...
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... MCLR pin was initially at V that all I/O are in the Reset state (high-impedance inputs). The PIC16F57 program memory may be written in two ways. The fastest method writes four words at a time to the program memory array. However, one-word writes are also supported. ...
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... Data is transferred LSb first. During Read commands, in which the data is output from the PIC16F57, the ICSPDAT pin transitions from the high-impedance state to the low-impedance output state at the rising edge of the second data clock (first clock edge after the Start cycle). The ICSPDAT pin returns to the high-impedance state at the rising edge of the 16th data clock (first edge of the Stop cycle) ...
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... PIC16F57 2.4.3.1 Load Data For Program Memory After receiving this command, the chip will load in a 14-bit “data word” when 16 cycles are applied, as described previously. Because this is a 12-bit core, the two MSbs of the data word are ignored. A timing diagram for the Load Data command is shown in Figure 2-3 ...
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... End PROG Programming command. This command programs the current location(s), no erase is performed. FIGURE 2-6: BEGIN PROGRAMMING (EXTERNALLY TIMED) 1 ICSPCLK ICSPDAT 0 © 2007 Microchip Technology Inc. T DLY SET T 1 HLD T PROG SET HLD Preliminary PIC16F57 2 Next Command 1 2 End Programming Command DS41208C-page 5 ...
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... PIC16F57 2.4.3.5 End Programming The End Programming command terminates the program process by removing the high programming voltage from the memory cells and resetting the data input latches to all ‘1’s (erased state). A delay of T (see Table 5-1) is required before the next command to allow the high programming voltage to discharge (see Figure 2-7 ...
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... FIGURE 2-9: ONE-WORD PROGRAM FLOWCHART – PIC16F57 PROGRAM MEMORY Start Enter Program Mode PC = 0xFFF Increment Address Bulk Erase Device One Word Program Cycle Read Data from Program Memory Data Correct? Yes Increment No All Locations Address Done? Command Yes Exit Program Mode ...
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... PIC16F57 FIGURE 2-10: FOUR-WORD PROGRAM FLOWCHART – PIC16F57 PROGRAM MEMORY Start Enter Program Mode PC = FFF Increment Address Command Bulk Erase Device Four-Word Program Cycle Increment No All Locations Address Done? Command Yes Reset and Re-enter Program/Verify Read Data Command Data Correct? Yes ...
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... FIGURE 2-11: PROGRAM FLOWCHART – PIC16F57 CONFIGURATION MEMORY Start Enter Program Mode PC = 0xFFF One-Word Programming Cycle (see Figure 2-9) Read Data Command Data No Correct? Yes Increment Address Command No Address = 0x800? Yes Load Data Command One-Word Programming Cycle (see Figure 2-9) © 2007 Microchip Technology Inc. ...
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... PIC16F57 FIGURE 2-12: PROGRAM FLOWCHART – ERASE PROGRAM MEMORY, CONFIGURATION WORD FIGURE 2-13: PROGRAM FLOWCHART – ERASE PROGRAM MEMORY, CONFIGURATION WORD AND USER ID Increment PC DS41208C-page 10 Start Enter Program/Verify mode PC = 0x3FF (Config Word) Bulk Erase Device Wait T ERA Done Start Enter Program/Verify mode ...
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... CONFIGURATION WORD The PIC16F57 has several Configuration bits. These bits can be programmed (reads ‘0’), or left unchanged (reads ‘1’), to select various device configurations. REGISTER 3-1: CONFIGURATION WORD — — — — bit 11 Legend Readable bit W = Writable bit -n = Value at POR ‘ ...
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... Checksum is calculated by reading the contents of the PIC16F57 memory locations and adding up the opcodes up to the maximum user addressable location, (e.g., 0x7FF for the PIC16F57). Any carry bits exceed- ing 16 bits are neglected. Finally, the Configuration Word (appropriately masked) is added to the check- sum ...
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... V 100 — 5 — 100 — 100 — 1.0 — 1.0 — — — — 10 — — 100 — — Preliminary PIC16F57 10°C ≤ T ≤ 40°C A 4.5V ≤ V ≤ 5.5V DD Units Conditions/Comments 5.5 V 5.5 V 0 μs 1.0 μs — — V ...
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... PIC16F57 NOTES: DS41208C-page 14 Preliminary © 2007 Microchip Technology Inc. ...
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... PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...
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... Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 Preliminary © 2008 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...