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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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TMP89FS60 Scheda tecnica(PDF) 55 Page - Toshiba Semiconductor |
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TMP89FS60 Scheda tecnica(HTML) 55 Page - Toshiba Semiconductor |
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55 / 410 page  Page 41 TMP89FS60 RA001 Note: The voltage detection circuits are disabled by an external reset input or power-on reset only. 2.4.4 Reset Signal Generating Factors Reset signals are generated by each factor as follows: 2.4.4.1 External reset input (RESET pin input) Port P10 is also used as the RESET pin, and it serves as the RESET pin after the power is turned on. If the supply voltage is lower than the recommended operating voltage range, for example, when the power is turned on, the supply voltage is raised to the operating voltage range with the RESET pin kept at the "L" level, and a reset is applied 5 µs after the oscillation is stabilized. If the supply voltage is within the recommended operating voltage range, the RESET pin is kept at the "L" level for 5 µs with the stabilized oscillation, and then a reset is applied. In each case, after a reset is applied, it is released by turning the RESET pin to "H" and the warm-up operation that follows reset release gets started. Table 2-5 Initialization of Built-in Hardware by Reset Operation and Its Status after Release Built-in hardware During reset During the warm-up opera- tion that follows reset release Immediately after the warm-up operation that fol- lows reset release Program counter (PC) MCU mode: 0xFFFE Serial PROM mode:0x01FF MCU mode: 0xFFFE Serial PROM mode:0x01FF MCU mode: 0xFFFE Serial PROM mode:0x01FF Stack pointer (SP) 0x00FF 0x00FF 0x00FF RAM Indeterminate Indeterminate Indeterminate General-purpose registers (W, A, B, C, D, E, H, L, IX and IY) Indeterminate Indeterminate Indeterminate Register bank selector (RBS) 0 0 0 Jump status flag (JF) Indeterminate Indeterminate Indeterminate Zero flag (ZF) Indeterminate Indeterminate Indeterminate Carry flag (CF) Indeterminate Indeterminate Indeterminate Half carry flag (HF) Indeterminate Indeterminate Indeterminate Sign flag (SF) Indeterminate Indeterminate Indeterminate Overflow flag (VF) Indeterminate Indeterminate Indeterminate Interrupt master enable flag (IMF) 0 0 0 Individual interrupt enable flag (EF) 0 0 0 Interrupt latch (IL) 0 0 0 High-frequency clock oscillation circuit Oscillation enabled Oscillation enabled Oscillation enabled Low-frequency clock oscillation circuit Oscillation disabled Oscillation disabled Oscillation disabled Warm-up counter Reset Start Stop Timing generator prescaler and divider 0 0 0 Watchdog timer Disabled Disabled Enabled Voltage detection circuit Disabled or enabled Disabled or enabled Disabled or enabled I/O port pin status HiZ HiZ HiZ Special function register Refer to the SFR map. Refer to the SFR map. Refer to the SFR map. |
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