PD17012_15 Datasheet, PDF (70/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
Table 8-1. Peripheral Hardware Control Functions of Control Registers (4/4)
Control Register
Peripheral Hardware Control Function
After Reset
Name
b3
Read/ b2
Address
Write b1
b0
Functional Outline
Set Value
0
1
SC
TE
O
P
BEEP clock
select
25H
register
BEEP1CK1
0
0
1
1
– – – – – – – – – Sets output frequency of BEEP1
1 kHz 3 kHz 200 Hz 9 kHz
BEEP1CK0
0
1
0
1
R/W ^{– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –} 0 0
BEEP0CK1
– – – – – – – – – _{Sets output frequency of BEEP0}
0
0
1
1
1 kHz 3 kHz 200 Hz 9 kHz
BEEP0CK0
0
1
0
1
LCD mode
select
register
LCD port
select
register
10H
11H
0
Fixed to 0
––––––––––––––––––––– ––––––––––––––––––––– ––––––––––––––––––
KSEN
Sets key source output signal
Key source off Key source on
R/W – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
LCDEN
Sets LCD display output
Display off
Display on
––––––––––––––––––––– ––––––––––––––––––––– ––––––––––––––––––
PYASEL
00
R/W
P2HSEL
–––––––––
P2GSEL
–––––––––
P2FSEL
–––––––––
PYA0-PYA15 pins
P2H0 pin
P2G0 pin
P2F0 pin
P2E0 pin
Set as general-
purpose output
port
LCD segment
General-
purpose
output port
P2ESEL
Key input
judge
register
0
–––––––––
0
Fixed to 0
16H R&Reset – – – – – – – – –
000
0
––––––––––––––––––––– ––––––––––––––––––––– ––––––––––––––––––
KEYJ
Detects if key input latch is valid
Latch invalid Latch valid
CE pin level
judge
07H
register
0
–––––––––
0
Fixed to 0
R ^{–––––––––}
–––
0
––––––––––––––––––––– ––––––––––––––––––––– ––––––––––––––––––
CE
Detects status of CE pin
Low level
High level
Remark –: Determined according to the status of the pin.
8.5 Notes on Using Register File
Note the following points (1) through (3) when manipulating the write-only registers (W), read-only registers
(R), and unused registers of the control registers (addresses 00H to 3FH of the register file).
(1) When a write-only register is read, an undefined value is read.
(2) Nothing is changed even if data is written to a read-only register.
(3) An undefined value is read if an unused register is read. Nothing is changed even if data is written to an unused
register.
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Data Sheet U10101EJ4V0DS