LAPIS Semiconductor ML610421, User Manual, Page: 16 / 437

ML610Q421/ML610Q422/ML610421 User’s Manual
Chapter 1 Overview
1 – 1
1. Overview
1.1 Features
This LSI is a high-performance 8-bit CMOS microcontroller into which rich peripheral circuits, such as synchronous
serial port, UART, I
2
C bus interface (master), melody driver, battery level detect circuit, RC oscillation type A/D
converter, 12-bit successive approximation type A/D converter, and LCD driver, are incorporated around 8-bit CPU
nX-U8/100.
The CPU nX-U8/100 is capable of efficient instruction execution in 1-intruction 1-clock mode by 3-stage pipe line
architecture parallel procesing.
The Flash ROM that is installed as program memory to ML610Q421/ML610Q422 achieves low-voltage low-power
consumption operation (read operation) equivalent to mask ROM and is most suitable for battery-driven applications.
The on-chip debug function that is installed enables program debugging and programming.
•
CPU
−
8-bit RISC CPU (CPU name: nX-U8/100)
−
Instruction system: 16-bit instructions
−
Instruction set: Transfer, arithmetic operations, comparison, logic operations, multiplication/division, bit
manipulations, bit logic operations, jump, conditional jump, call return stack manipulations,
arithmetic shift, and so on
−
On-Chip debug function
（
ML610Q421/ML610Q422 only
）
−
Minimum instruction execution time
30.5
µ
s (@32.768 kHz system clock)
0.24 4
µ
s (@4.096 MHz system clock)
•
Internal memory
−
ML610Q421/ML610Q422:Internal 32KByte Flash ROM (16K
×
16 bits) (including unusable 1KByte TEST area)
−
ML610421:Internal 32KByte Mask ROM (16K
×
16 bits) (including unusable 1KByte TEST area)
−
Internal 1KByte Data RAM (1024
×
8 bits), 1KByte Display Allocation RAM (1024 x 8bit)
−
Internal 100-byte RAM for display
•
Interrupt controller
−
2 non-maskable interrupt sources (Internal source: 1, External source: 1)
−
20 maskable interrupt sources (Internal sources: 16, External sources: 4)
•
Time base counter
−
Low-speed time base counter
×
1 channel
Frequency compensation (Compensation range: Approx.
−
488ppm to +488ppm. Compensation accuracy: Approx.
0.48ppm)
−
High-speed time base counter
×
1 channel
•
Watchdog timer
−
Non-maskable interrupt and reset
−
Free running
−
Overflow period: 4 types selectable (125ms, 500ms, 2s, and 8s)
•
Timers
−
8 bits
×
4 channels (Timer0-3: 16-bit x 2 configuration available by using Timer0-1 or Timer2-3)
−
Clock frequency measurement mode (in one channel of 16-bit configuration using Timer2-3)
•
1 kHz timer
−
10 Hz/1 Hz interrupt function