PD17P709A_15 Datasheet, PDF (15/38 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLER WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM

µPD17P709A
Pin No. Symbol
74 REG
76
XOUT
77
XIN
78 CE
80 RESET
Function
CPU regulator.
Connect this pin to GND via 0.1 µF capacitor.
Ground pins of crystal resonator.
Output Form
–
–
Device operation selection, CE reset, and interrupt signal input pin.
–
• Device operation selection
When CE is high, the PLL frequency synthesizer can operate.
When CE is low, the PLL frequency synthesizer is automatically disabled
internally.
• CE reset
When CE goes high, the device is reset at the rising edge of the internal
basic timer setting pulse. This pin also has a reset timing delay function.
• Interrupt
A vectored interrupt occurs at the falling edge of this pin.
Reset input
–
1.2 PROM Programming Mode
Pin No. Symbol
26 MD3
|
|
29 MD0
21 GND2
33 GND1
75 GND0
36
VPP
30
VDD1
79
VDD0
51 D7
|
|
58 D0
77 CLK
Function
Input for operating mode selection for program memory write, read, or
verify.
Ground
Output Form
–
–
Pin to which program voltage is applied during program memory write, read,
or verify. +12.5 V is applied.
Power supply pins. +6 V is applied during program memory write, read, or
verify.
8-bit data I/O for program memory write, read, or verify
–
–
CMOS push-pull
Clock input for address updating during program memory write, read, or
–
verify
Remark The pins other than those listed above are not used in PROM programming mode. For the handling
of the unused pins, see PIN CONFIGURATION (2) PROM programming mode.
Data Sheet U15723EJ1V0DS
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