Features: <Microcomputer mode>
• Number of basic machine instructions .................................... 203
• Memory
[M37902FCCHP]
Flash memory (User ROM area) ................................. 120 Kbytes
RAM .............................................................................4096 bytes
[M37902FGCHP]
Flash memory (User ROM area) ................................. 248 Kbytes
RAM .............................................................................6144 bytes
[M37902FJCHP]
Flash memory (User ROM area) ................................. 498 Kbytes
RAM ...........................................................................12288 bytes
[All of the above computers]
Flash memory (Boot ROM area) ................................... 16 Kbytes
• Instruction execution time
The fastest instruction at 26 MHz frequency ........................ 38 ns
• Single power supply .................................................... 5 V ± 0.5 V
• Interrupts ........... 6 external sources, 16 internal sources, 7 levels
• Multi-functional 16-bit timer ................................................... 5 + 3
• Serial I/O (UART or Clock synchronous) ..................................... 2
• 10-bit A-D converter ............................................ 8-channel inputs
• 8-bit D-A converter ............................................ 3-channel outputs
• Real-time output
.... 4 bits * 2 channels, or 6 bits * 1 channel + 2 bits * 1 channel
• 12-bit watchdog timer
• Programmable input/output (ports P0P8, P10, P11) ............... 84
<Flash memory mode>
• Power supply voltage .................................................. 5 V ± 0.5 V
• Programming/Erase voltage ........................................ 5 V ± 0.5 V
• Programming method ............ Programming in a unit of 256 bytes
• Erase method ............................................ Block erase or Total erase
(Data protection per block is enabled.)
• Programming/Erase control by software command
• Maximum number of reprograms ............................................ 100ApplicationControl devices for personal computer peripheral equipment such as CD-ROM drives, DVD-ROM drives, hard disk drives, high density FDD, printers
Pinout
Specifications
| Symbol |
Paramete |
Ratings |
Unit |
| VCC |
Power source voltage |
0.3 to 6.5 |
V |
| AVCC |
Analog power source voltage |
0.3 to 6.5 |
V |
| VI |
Input voltage D0D7, D8/P20D15/P27, P30, P33, P40P44, P50P57, |
0.3 to VCC+0.3 |
V |
| P60P66, P70P73, P80P86, P91P96, P100P107, |
| P110P117, P120P122, |
| VREF, XIN, RESET, BYTE, MD0, MD1, NMI |
| VO |
Output voltage D0D7, D8/P20D15/P27, P30, P40P44, P50P57, |
0.3 to VCC+0.3 |
V |
| P60P66, P70P73, P80P86, P91P96, P100P107, |
| P110P117, P120P122, XOUT |
| Pd |
Power dissipation |
400 |
mW |
| Topr |
Operating ambient temperature |
20 to 85 |
|
| Tstg |
Storage temerature |
40 to 150 |
|
DescriptionThese are single-chip microcomputers designed with high-performance CMOS silicon gate technology, including the internal flash memory. These microcomputers support the 7900 Series instruction set, which are enhanced and expanded instruction set and are upper-compatible with the 7700/7751 Series instruction set.
The CPU of 7900 Series is a 16-bit parallel processor that can also be switched to perform 8-bit parallel processing. Also, the bus interface unit of 7900 Series enhances the memory access efficiency to execute instructions fast. Therefore, these microcomputers are suitable for office, business, and industrial equipment controller that require high-speed processing of large data.
For the internal flash memory, single-power-supply programming and erasure, using a PROM programmer or the control by the central processing unit (CPU), is supported. Also, each of 7900 Series has the memory area dedicated for storing a certain software which controls programming and erasure (reprogramming control software). Therefore, on 7900 Series, the program can easily be changed even after they are mounted on the board.
M37902FJCHP Data Sheet
