8-bit Single-chip Microcontroller
The MN101E series of 8-bit single-chip microcomputers (the memory expansion version of MN101C series) incorporate
multiple types of peripheral functions. This chip series is well suited for camera, VCR, MD, TV, CD, LD, printer, telephone,
home automation, pager, air conditioner, PPC, fax machine, music instrument and other applications.
This LSI brings to embedded microcomputer applications ﬂexible, optimized hardware conﬁgurations and a simple efﬁcient
instruction set. The MN101E31 series have an internal 128 KB/64 KB (maximum) of ROM and 6 KB/4 KB(maximum) of
RAM. Peripheral functions include 6 external interrupts, 23 internal interrupts including NMI, 9 timer counters, 5 sets of serial
interfaces, A/D converter, LCD driver, watchdog timer, 1 set of automatic data transfer, synchronous output function and buzzer
output. The conﬁguration of this microcomputer is well suited for application as a system controller in camera, timer selector for
VCR, CD player, or minicomponent.
With three oscillation system (high frequency : max. 10 MHz / low frequency : 32.768 kHz and PLL : frequency multiplier
of high frequency) contained on the chip, the system clock can be switched to high frequency input (high speed mode), PLL
input (PLL mode), or to low frequency input (low speed 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. High speed mode has the normal mode which is based on 2-cycle clock (fpll/2) and the
double speed mode which is based on the not-devided clock with fpll.
A machine cycle (min. instructions execution) in the normal mode is 200 ns when fosc is 10 MHz (at the time that PLL is
not used). A machine cycle in the double speed mode is 100 ns when fosc is 10 MHz. A machine cycle in the PLL mode is 50 ns
(maximum).The package is 80-pin, LQFP.
This manual describes the following models of the MN101E31 series. These products have identical functions. Please note that mainly
dealed here is MN101E31G.
Mask ROM version
128 KB + 4 KB
64 KB + 8 KB
Flash EEPROM version
Publication date: February 2012