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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M16C/29 датащи(PDF) 62 Page - Renesas Technology Corp |
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M16C/29 датащи(HTML) 62 Page - Renesas Technology Corp |
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62 / 499 page  5. Resets p u o r G 9 2 / C 6 1 M page 38 8 5 4 f o 7 0 0 2 , 0 3 .r a M 2 1 . 1 . v e R 2 1 1 0 - 1 0 1 0 B 9 0 J E R 5.5 Voltage Detection Circuit Note VCC = 5 V is assumed in 5.5 Voltage Detection Circuit. Voltage detection circuit in the M16C/29 Group, T-ver. and V-ver. cannot be used. The voltage detection circuit has the reset level detection circuit and the low voltage detection circuit. The reset level detection circuit monitors the voltage applied to the VCC pin. The MCU is reset if the reset level detection circuit detects VCC is Vdet3 or below. Use bits VC27 and VC26 in the VCR2 register to determine whether the individual circuit is enabled. Use the reset level detection circuit for brown-out detection reset. The low voltage detection circuit also monitors the voltage applied to the VCC pin. The low voltage detec- tion circuit use the VC13 bit in the VCR1 register to detect VCC is above or below Vdet4. The low voltage detection interrupt can be used in the voltage detection circuit. Figure 5.4 Voltage Detection Circuit Block b7 b6 VCR2 Register RESET CM10 Bit=1 (Stop Mode) + >Vdet3 + >Vdet4 E Noise Rejection Low Voltage Detect Signal b3 VCR1 Register VC13 Bit >T Q 1 shot Internal Reset Signal (“L” active) E VCC td(S-R) Brown-out Detect Reset (Hardware Reset 2 Release Wait Time) Reset level detection circuit Low voltage detection circuit |
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