4571 Datasheet, PDF (10/126 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4571 Group
(Note 3)
Register A
Aj
IAP3 instruction
(Note 3) FR0j
Aj
D
OP3A instruction T Q
(Note 1)
P30, P31(Note 2)
(Note 1)
SCP instruction
SQ
RCP instruction
R
PWMOD
Timer 1 underflow signal
W51
D
TQ
R
W12
Key-on wakeup input
(Note 4)
Edge detection
circuit
Register A
A0
IAK instruction
PWMOUT
(Note 1)
C/CNTR1(Note 2)
(Note1)
Carrier wave output auto-control signal
K22
K(Note 2)
(Note 1)
Notes 1.
This symbol represents a parasitic diode on the port.
2. Applied potential to these ports must be V DD or less.
3. j represents bits 0 or 1.
4. Falling edge of port input is detected.
Fig 5. Port block diagram (3)
Rev.1.02 May 25, 2007 Page 10 of 124
REJ03B0179-0102