BU24591 Datasheet, PDF (2/8 Pages) Rohm – 4bit 1chip micro-controller for CD-DA

Optical ICs
!Block diagram
BU24591
PWC01A
PWC
IRQ
TMR03B
T0,T1
IRQ
IRQ
STP04A
STP
IRQ
BIX03A
STP
W0∼W3
BIN
PIO11A
P00∼P03
PIO11A
P10∼P13
PIO11A
P20∼P23
SCK0
SIO04B
SIO0
IRQ
SIN0
SCK1
SIO04B
SIO1
IRQ
SIN1
ADC83A
8CH-8BIT
/ DIGITAL-IN
ADC0∼7
LCD07A
COMMON
GEN.
BIAS
GEN.
DISP.
SEGMENT
DRIVER
COM0∼3
SEG00∼03
SEG04∼07
SEG08∼11
SEG12∼15
SEG16∼19
∗ PROM in not contained.
∗ Address bus and data bus do not go out. (External memory cannot be addressed.)
∗ The number of bits of ALU is 4.
2/7