r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 82
r5f21346mnfp
Manufacturer Part Number
r5f21346mnfp
Description
Single-chip Mcus Incorporates The R8c Cpu Core
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R5F21346MNFP.pdf
(776 pages)
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R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
6.3
6.3.1
6.3.2
6.3.3
Vdet0 cannot be monitored.
Once the following settings are made, the comparison result of voltage monitor 1 can be monitored by the
VW1C3 bit in the VW1C register after td(E-A) has elapsed (refer to 34. Electrical Characteristics).
(1) Set bits VD1S3 to VD1S0 in the VD1LS register (voltage detection 1 detection voltage).
(2) Set the VCA21 bit in the VCA2 register to 0 (internal reference voltage).
(3) Set the VCA22 bit in the VCA2 register to 0 (VCC voltage).
(4) Set the VCA26 bit in the VCA2 register to 1 (voltage detection 1 circuit enabled).
Once the following settings are made, the comparison result of voltage monitor 2 can be monitored by the
VCA13 bit in the VCA1 register after td(E-A) has elapsed (refer to 34. Electrical Characteristics).
(1) Set the VCA23 bit in the VCA2 register to 0 (internal reference voltage).
(2) Set the VCA24 bit in the VCA2 register to 0 (VCC voltage), or 1 (LVCMP2 pin input voltage).
(3) Set the VCA27 bit in the VCA2 register to 1 (voltage detection 2 circuit enabled).
VCC Input Voltage
Monitoring Vdet0
Monitoring Vdet1
Monitoring Vdet2
6. Voltage Detection Circuit
Page 50 of 740
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