sh6636 SinoWealth Micro-Electronics Corp. Ltd, sh6636 Datasheet - Page 18

• Manufacturer Part Number: sh6636
• Description: Mask 4-bit Microcontroller With Remote Control Carrier Synthesizer
• Manufacturer: SinoWealth Micro-Electronics Corp. Ltd

Application Circuit (for reference only)
AP1:
Remote Control (64 Keys)
(1) Oscillator: Ceramic 400KHz - 2MHz
(2) C1 = C2 = 20P - 150P
(3) Port A and D: I/O Buffers
(4) Port B and C: Input Buffers
(5) C3 can be removed, but for increased reliability, C3 needs to be added
(6) R1 = 0 is possible, but the REM specification is revised to reduce power consumption
(7) I
REM
= -5mA (V
REM
= 1V).
47
C3
C1
C2
R1
GND
REM
RESET
OSCO
OSCI
V
DD
18
PORTD.3
PORTD.2
PORTD.1
PORTD.0
PORTC.3
PORTC.2
PORTC.1
PORTC.0
PORTB.3
PORTB.2
PORTB.1
PORTB.0
PORTA.3
PORTA.2
PORTA.1
PORTA.0
SH6636