77M70

DESCRIPTION

The 3807 group is a 8-bit microcomputer based on the 740 family core technology.
The 3807 group has two serial I/Os, an A-D converter, a D-A converter, a real time output port function, a watchdog timer, and an analog comparator, which are available for a system controller which controls motors of office equipment and household appliances.
The various microcomputers in the 3807 group include variations of internal memory size and packaging. For details, refer to the section on part numbering.
For details on availability of microcomputers in the 3807 group, refer to the section on group expansion.

FEATURES

• Basic machine-language instructions ....................................... 71
• The minimum instruction execution time ............................ 0.5 µs
(at 8 MHz oscillation frequency)
• Memory size .................................................................................
ROM ................................................ 8 to 60 K bytes
RAM ............................................ 384 to 2048 bytes
• Programmable input/output ports ............................................. 68
• Software pull-up resistors (Ports P0 to P2) .............................. 24
• Input ports (Ports P63 and P64) ................................................. 2
• Interrupts .................................................. 20 sources, 16 vectors
• Timers X, Y .................................................................. 16-bit ✕ 2
• Timers A, B (for real time output port function) ............ 16-bit ✕ 2
• Timers 1–3 ..................................................................... 8-bit ✕ 3
• Serial I/O1 (UART or Clock-synchronized) .................... 8-bit ✕ 1
• Serial I/O2 (Clock-synchronized) ................................... 8-bit ✕ 1
• A-D converter ................................................ 8-bit ✕ 13 channels
• D-A converter .................................................. 8-bit ✕ 4 channels
• Watchdog timer ............................................................ 16-bit ✕ 1
• Analog comparator ........................................................ 1 channel
• 2 Clock generating circuit
Main clock (XIN–XOUT) .......................... Internal feedback resistor
Sub-clock (XCIN–XCOUT) .......... Without internal feedback resistor
(connect to external ceramic resonator or quartz-crystal oscillator)
• Power source voltage
In high-speed mode ................................................... 4.0 to 5.5 V
(at 8 MHz oscillation frequency and high-speed selected)
In middle-speed mode ................................................ 2.7 to 5.5 V
(at 8 MHz oscillation frequency and middle-speed selected)
In low-speed mode ..................................................... 2.7 to 5.5 V
(at 32 kHz oscillation frequency and low-speed selected)
• Power dissipation
In high-speed mode ......................................................... 34 m W
(at 8 MHz oscillation frequency, at 5 V power source voltage)
In low-speed mode ............................................................. 60 µW
(at 32 kHz oscillation frequency, at 3 V power source voltage)
• Memory expansion .......................................................... possible
• Operating temperature range ................................... –20 to 85 °C

APPLICATION

LBP engine control, PPC, FAX, office equipment, household appliances, consumer electronics, etc.