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PIC876 датащи(PDF) 129 Page - Microchip Technology |
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PIC876 датащи(HTML) 129 Page - Microchip Technology |
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129 / 218 page ![]() 2001 Microchip Technology Inc. DS30292C-page 127 PIC16F87X FIGURE 12-5: TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD) PIE2 873 874 876 877 -r-0 0--0 -r-0 0--0 -r-u u--u PCON 873 874 876 877 ---- --qq ---- --uu ---- --uu PR2 873 874 876 877 1111 1111 1111 1111 1111 1111 SSPADD 873 874 876 877 0000 0000 0000 0000 uuuu uuuu SSPSTAT 873 874 876 877 --00 0000 --00 0000 --uu uuuu TXSTA 873 874 876 877 0000 -010 0000 -010 uuuu -uuu SPBRG 873 874 876 877 0000 0000 0000 0000 uuuu uuuu ADRESL 873 874 876 877 xxxx xxxx uuuu uuuu uuuu uuuu ADCON1 873 874 876 877 0--- 0000 0--- 0000 u--- uuuu EEDATA 873 874 876 877 0--- 0000 0--- 0000 u--- uuuu EEADR 873 874 876 877 xxxx xxxx uuuu uuuu uuuu uuuu EEDATH 873 874 876 877 xxxx xxxx uuuu uuuu uuuu uuuu EEADRH 873 874 876 877 xxxx xxxx uuuu uuuu uuuu uuuu EECON1 873 874 876 877 x--- x000 u--- u000 u--- uuuu EECON2 873 874 876 877 ---- ---- ---- ---- ---- ---- TABLE 12-6: INITIALIZATION CONDITIONS FOR ALL REGISTERS (CONTINUED) Register Devices Power-on Reset, Brown-out Reset MCLR Resets, WDT Reset Wake-up via WDT or Interrupt Legend: u = unchanged, x = unknown, - = unimplemented bit, read as ’0’, q = value depends on condition, r = reserved, maintain clear Note 1: One or more bits in INTCON, PIR1 and/or PIR2 will be affected (to cause wake-up). 2: When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector (0004h). 3: See Table 12-5 for RESET value for specific condition. TPWRT TOST VDD MCLR INTERNAL POR PWRT TIME-OUT OST TIME-OUT INTERNAL RESET |
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