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HD4046212RFS Datasheet(PDF) 69 Page - Renesas Technology Corp

Part # HD4046212RFS
Description  AS Microcomputer Incorporating a DTMF Generator Circuit
PDF  157 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD4046212RFS Datasheet(HTML) 69 Page - Renesas Technology Corp

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HD404629R Series
67
The upper digit (TRBU) must be read first. At this time, the count of the timer B upper digit is
obtained, and the count of the timer B lower digit is latched to the lower digit (TRBL). After this, by
reading TRBL, the count of timer B when TRBU is read can be obtained.
Bit
Initial value
Read/Write
Bit name
3
Undefined
R
TRBL3
2
Undefined
R
TRBL2
0
Undefined
R
TRBL0
1
Undefined
R
TRBL1
Timer read register B (lower digit) (TRBL: $00A)
Figure 51 Timer Read Register B Lower Digit (TRBL)
Bit
Initial value
Read/Write
Bit name
3
Undefined
R
TRBU3
2
Undefined
R
TRBU2
0
Undefined
R
TRBU0
1
Undefined
R
TRBU1
Timer read register B (upper digit) (TRBU: $00B)
Figure 52 Timer Read Register B Upper Digit (TRBU)
• Port mode register C (PMRC: $025): Write-only register that selects R1
3/EVNB pin function as shown
in figure 53. It is reset to $0 by MCU reset.
Bit
Initial value
Read/Write
Bit name
3
0
W
PMRC3
2
0
W
PMRC2
0
0
W
PMRC0
1
0
W
PMRC1
PMRC1
0
1
R20/EVND mode selection
R20
EVND
Port mode register C (PMRC: $025)
PMRC0
0
1
R13/EVNB mode selection
R13
EVNB
PMRC3
0
1
D11/INT0 mode selection
D11
INT0
PMRC2
0
1
D10/STOPC mode selection
D10
STOPC
Figure 53 Port Mode Register C (PMRC)



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