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Chapter 1 Overview
I - 2
Overview
1-1 Overview
1-1-1 Overview
The MN101C series of 8-bit single-chip microcontroller incorporates multiple types of peripheral functions.
This chip series is well suited for camera, VCR, MD, TV, CD, LD, printer, telephone, home automation
products, pager, air conditioner, PPC remote control, fax machine, musical instrument, and other applica-
tions.
The MN101C77 series brings to embedded microcontroller applications flexible, optimized hardware
configurations and a simple efficient instruction set. The MN101C77C has an internal 48 KB of ROM and
3 KB of RAM. Peripheral functions include 5 external interrupts, 17 internal interrupts including NMI,
independent 6 timer counters, 4 sets of serial interfaces, A/D converter, D/A converter, watchdog timer,
automatic data transfer, synchronous output, buzzer output, and remote control output. The configura-
tion of this microcontroller is well suited for application such as a system controller in a camera, VCR
selection timer, CD player, or MD.
With two oscillation systems (max.20 MHz/32 kHz) contained on the chip, the system clock can be
switched to high speed oscillation (NORMAL mode), or to low speed oscillation (SLOW mode). The
system clock is generated by dividing the oscillation clock. The best operation clock for the system can
be selected by switching its frequency by software. There are 2 choices for high speed oscillation : the
normal mode, which has a system clock based on the clock (fosc/2) divided by 2, and the 2x-speed
mode, which has a system clock based on the same cycle clock (fosc).
On the normal mode, when the oscillation source(fosc) is 8 MHz, minimum instructions execution
time is for 250 ns, and when fosc is 20 MHz, it is 100 ns. On the 2x-speed mode, CPU is operated with
the same cycle to the external clock, when fosc is 8 MHz, minimum instructions execution time is 125 ns.
The packages are 64-pin LQFP and 64-pin TQFP (under development).
1-1-2 Product Summary
This manual describes the following models of the MN101C77 series. These products have same pe-
ripheral functions. (Refer to chapter 18 Flash EEPROM for Flash version.)
Model ROM Size RAM Size Classification
MN101C77C 48 KB 3 KB Mask ROM version
MN101CF77G 128 KB 6 KB Flash EEPROM version
Table 1-1-1 Product Summary