LC875932A Datasheet, PDF (3/23 Pages) Sanyo Semicon Device – CMOS IC Internal 32K/24K/16K-byte ROM and 1024-byte RAM 8-bit 1-chip Microcontroller

LC875932A/24A/16A
„UART
• Full duplex
• 7/8/9 bit data bits selectable
• 1 stop bit (2-bit in continuous data transmission)
• Built-in baudrate generator
„AD Converter: 8 bits × 11 channels
„PWM: Multifrequency 12-bit PWM × 2 channels
„Remote Control Receiver Circuit (sharing pins with P73, INT3, and T0IN)
• Noise rejection function (noise filter time constant selectable from 1 tCYC, 32 tCYC, and 128 tCYC)
„Watchdog Timer
• External RC watchdog timer
• Interrupt and reset signals selectable
„Clock Output Function
1) Able to output selected oscillation clock 1/1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64 as system clock.
2) Able to output oscillation clock of sub clock.
„Interrupts
• 23 sources, 10 vector addresses
1) Provides three levels (low (L), high (H), and highest (X)) of multiplex interrupt control. Any interrupt requests
of the level equal to or lower than the current interrupt are not accepted.
2) When interrupt requests to two or more vector addresses occur at the same time, the interrupt of the highest level
takes precedence over the other interrupts. For interrupts of the same level, the interrupt into the smallest vector
address takes precedence.
No. Vector Address
Level
Interrupt Source
1
00003H
X or L
INT0
2
0000BH
X or L
INT1
3
00013H
H or L
INT2/T0L/INT4
4
0001BH
H or L
INT3/INT5/base timer0/base timer1
5
00023H
H or L
T0H
6
0002BH
H or L
T1L/T1H
7
00033H
H or L
SIO0/UART1 receive
8
0003BH
H or L
SIO1/UART1 transmit
9
00043H
H or L
ADC/T6/T7
10
0004BH
H or L
Port 0/T4/T5/PWM2, PWM3
• Priority levels X > H > L
• Of interrupts of the same level, the one with the smallest vector address takes precedence.
„Subroutine Stack Levels: 512 levels (the stack is allocated in RAM)
„High-speed Multiplication/Division Instructions
• 16 bits × 8 bits
(5 tCYC execution time)
• 24 bits × 16 bits (12 tCYC execution time)
• 16 bits ÷ 8 bits
(8 tCYC execution time)
• 24 bits ÷ 16 bits (12 tCYC execution time)
„Oscillation Circuits
• RC oscillation circuit (internal):
• CF oscillation circuit:
• Crystal oscillation circuit:
For system clock
For system clock, with internal Rf
For low-speed system clock, with internal Rf
No.A0125-3/23