PEDL66579-03
Semiconductor
1
MSM66579 Family
16-Bit Microcontroller
This version: Nov. 1999
Preliminary
GENERAL DESCRIPTION
The MSM66579 family of highly functional CMOS 16-bit single chip microcontrollers utilizes the nX-8/500S,
Oki’s proprietary CPU core.
Four channels of serial ports, consisting of two channels of synchronous serial ports with 32-byte FIFO registers
and two channels of UART/synchronous serial ports, enable easy interfacing with external peripheral LSI devices
such as an encoder/decoder or servocontroller.
A switching function permits selection of separate address and data lines or multiplexed lines for the bus interface
to correspond to various peripheral LSI devices.
With features such as a clock gear function, dual clock function, programmable pull-up ports in which individual
bits can be programmed, and a small, thin package, the MSM66579 family of microprocessors is optimally suited
for the system control of small-sized low power devices.
The flash ROM versions (MSM66Q577L and MSM66Q579L) programmable with a single 2.7V (minimum)
power supply and flash ROM version (MSM66Q577) programmable with a single 5V power supply are also
included in the family. These versions are easily adaptable to quick specification changes and to new product
revisions.
APPLICATIONS
Digital Audio Control Systems
PC peripheral Control Systems
Office Electronics Control Systems
ORDERING INFORMATION
Order Code or Product Name
MSM66577L-TB
MSM66577-TB
MSM66Q577L-TB
MSM66Q577-TB
MSM66579L-TB
MSM66Q579L-TB
100-pin plastic TQFP
(TQFP 100-P-1414-0.50-K)
Package
Remark
Low voltage mask ROM version
(2.4 to 3.6 V)
5 V mask ROM version
MSM66577L flash ROM version
MSM66577 flash ROM version
Low voltage mask ROM version
(2.4 to 3.6 V)
MSM66579L flash ROM version
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MSM66579 Family
FEATURES
Name
Operating temperature
Power supply voltage/
maximum frequency
Minimum instruction
execution time
Internal ROM size
(max. external)
Internal RAM size
(max. external)
I/O ports
4 KB (1 MB)
MSM66577L
MSM66577
–30°C to +70°C
V
DD
= 2.4 to 3.6 V/f = 14 MHz V
DD
= 4.5 to 5.5 V/f = 30 MHz V
DD
= 2.4 to 3.6 V/f = 28 MHz
143 ns at 14 MHz
61 µs at 32.768 kHz
67 ns at 30 MHz
61 µs at 32.768 kHz
128 KB (1 MB)
12 KB (1 MB)
71 ns at 28 MHz
61 µs at 32.768 kHz
MSM66579L
74 I/O pins (with programmable pull-up resistors) 8 input-only pins
16-bit free running timer × 1ch
Compare out/capture input × 2ch
16-bit timer (auto reload/timer out) × 1ch
8-bit auto reload timer × 2ch (can also be used as 16-bit timer × 1ch)
8-bit auto reload timer × 1ch
8-bit auto reload timer × 3ch
(also functions as serial communication baud rate generator)
8-bit auto reload timer × 1ch (also functions as watchdog timer)
Watch timer (Real-timer counter) × 1ch
8-bit PWM × 4ch (can also be used as 16-bit PWM × 2ch)
Synchronous, with 32-byte FIFO × 2ch
UART/Synchronous × 2ch
10-bit A/D converter × 8ch
8-bit D/A converter × 2ch
Non-maskable × 1ch
Maskable × 8ch
3 levels
Separate address and data busses/multiplexed address and data busses
Bus release function
Dual clocks
MSM66Q577L
MSM66Q577
MSM66Q579L
Timers
Serial port
A/D converter
D/A converter
External interrupt
Interrupt priority
Others
Flash ROM version
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MSM66579 Family
SPECIAL FEATURES
1. High-performance CPU
The family includes the high-performance CPU, powerful bit manipulation instruction set, full symmetrical
addressing mode, and ROM WINDOW function, and also provides the best optimized C compiler support.
2. A variety of power saving modes
Attaching a 32.768-kHz crystal produces a real-time clock signal from the internal clock timer. Use of a single
clock in place of dual clocks is possible. Switching the CPU clock to this clock signal, 1/2
×
main clock, or 1/4
×
main clock, then produces operation in a low power consumption mode. The clock gear function allows a 1/2
×
or
1/4
×
main clock to be selected for the CPU operating clock.
The family provides a wide range of standby control functions. In addition to the usual STOP mode that stops the
oscillator, there are the quick restart STOP mode that shuts down the CPU and peripherals but leaves the oscillator
running, and the HALT mode that shuts down the CPU but leaves the peripherals running.
3. Variety of multifunctional serial ports
The family includes two channels of built-in synchronous serial ports with 32-byte FIFO implementing an auto
transfer function. The family allows multi-byte 1-frame information which consists of address, command, and data
to be easily and efficiently transmitted to or received from a serial interface type peripheral LSI device. The family
also allows multi-byte character information to be easily and efficiently transmitted to or received from an LCD
module. In addition, the family has two channels of combined UART/synchronous serial ports, and provides four
channels of serial interfaces.
UART/synchronous SIO
UART/synchronous SIO
Synchronous SIO with 32-byte FIFO
Synchronous SIO with 32-byte FIFO
4. MSM66Q577L, MSM66Q577 and MSM66Q579L with flash memory programmable with single power
supply
In addition to the regular mask ROM version, the family includes these versions with 128KB of flash memory that
can be programmed using a single power supply. For the MSM66Q577L and MSM66Q579L, an internal booster
circuit derives the necessary program voltage from the device's low (2.7 V min) power supply, and the program
voltage for the MSM66Q577 is provided with a single 5 V power supply.
5. High-precision A/D and D/A converters
The family includes a high-precision 10-bit analog-to-digital converter with eight channels and 8-bit digital-to-
analog converter with two channels.
6. Multifunction PWM
The family supports both 8- and 16-bit PWM operation. Choosing between the time-base counter output or
overflow from an 8-bit auto-reload timer as the PWM counter clock source provides a wide number of possibilities
over a broad frequency range. The 16-bit PWM configuration supports a high-speed synchronization mode that
generates a high-precision output signal with less ripple suitable for digital-to-analog control applications.
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MSM66579 Family
7. Programmable pull-up resistors
Building the pull-up resistors into the chip contributes to overall design compactness. Making them programmable
on a per-bit basis allows complete flexibility in circuit board layout and system design. These programmable
pull-up resistors are available for all I/O pins not already assigned specific functions (such as the oscillator
connection pins).
8. Wide support for external interrupts
There are a total of nine interrupt channels for use in communicating with external devices: eight for maskable
interrupts and one for non-maskable interrupts.
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PEDL66579-03
Semiconductor
1
MSM66579 Family
BLOCK DIAGRAM
TM0OUT
TM0EVT
TM1OUT
TM1EVT
TM2OUT
TM2EVT
CLKOUT
XTOUT
RXD1
TXD1
RXC1
TXC1
TM4OUT
RXD6
TXD6
RXC6
TXC6
16 bit Timer0
8 bit Timer1
8 bit Timer2
Peripheral
SIO1
(UART/SYNC)
ALU Control
ACC
CPU Core
System
Control
ALU
Control
Registers
SSP
LRB
PSW
PC
CSR
XT0
XT1
OSC0
OSC1
HOLD
HLDACK
RES
8 bit Time4/BRG
SIO6
(UART/SYNC)
DSR TSR
8 bit Timer3/BRG
SIOI4
SIOO4
SIOCK4
SIO4
(32 byte FIFO SYNC)
Memory Control
Pointing Registers
Instruction
Decoder
EA
SELMBUS
PSEN
RD
WR
WAIT
D0 to D7
(AD0 to AD7*)
A0 to A19
(AD8 to AD19*)
8 bit Timer5/BRG
SIOI5
SIOO5
SIOCK5
SIO5
(32 byte FIFO SYNC)
RAM
4K/12K
ROM
128K
Bus Port Control
8 bit Timer6/WDT
PWMOUT0
PWMOUT2
PWMOUT1
PWMOUT3
8 bit Timer9
CPCM0
CPCM1
CAP/CMP
16 bit FRC
V
REF
AGND
AI0
to
AI7
AO0
AO1
NMI
EXINT0
to
EXINT7
10 bit A/D
Converter
8 bit D/A Converter
8 bit PWM0
8 bit PWM1
TBC
Interrupt
*: Address output/data I/O when
selecting multiplexed bus type.
Port Control
RTC
P0
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P14
P15
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