MB90480/485 Series
• MB90485 series
Part number
MB90487B MB90488B MB90F488B MB90V485B MB90F489B MB90483C
Item
Flash
memory
product
Flash
memory
product
Evaluation
product
MASK ROM
product
Classification
MASK ROM product
ROM size
RAM size
192 Kbytes 256 Kbytes 256 Kbytes
10 Kbytes 10 Kbytes 10 Kbytes
Number of instructions : 351
⎯
384 Kbytes 256 Kbytes
24 Kbytes 16 Kbytes
16 Kbytes
Instruction bit length
Instruction length
Data bit length
: 8-bit, 16-bit
: 1 byte to 7 bytes
: 1-bit, 8-bit, 16-bit
CPU function
Ports
Minimum instruction execution time : 40 ns (25 MHz machine clock)
General-purpose I/O ports : up to 84
General-purpose I/O ports (CMOS output)
General-purpose I/O ports (with pull-up resistance)
General-purpose I/O ports (N-ch open drain output)
UART
1 channel, start-stop synchronized
8/16-bit PPG
8-bit × 6 channels/16-bit × 3 channels
8/16-bit up/down
counter/timer
Event input pins : 6, 8-bit up/down counters : 2
8-bit reload/compare registers : 2
16-bit free run Number of channels : 1
timer
Overflow interrupt
16-bit
I/O
timers
Output
compare
(OCU)
Number of channels : 6
Pin input factor: A match signal of compare register
Input capture Number of channels : 2
(ICU) Rewriting a register value upon a pin input (rising, falling, or both edges)
DTP/external interrupt
circuit
Number of external interrupt pin channels: 8 (edge or level detection)
Embedded 2 channels
Extended I/O serial
interface
I2C interface*2
1 channel
1 channel
3 channels
µPG
PWC
18-bit counter
Timebase timer
Interrupt cycles : 1.0 ms, 4.1 ms, 16.4 ms, 131.1 ms (at 4 MHz base oscillator)
Conversion resolution : 8/10-bit, switchable
One-shot conversion mode (converts selected channel 1 time only)
Scan conversion mode (conversion of multiple consecutive channels,
programmable up to 8 channels)
A/D converter
Continuous conversion mode (repeated conversion of selected channels)
Stop conversion mode (conversion of selected channels with repeated pause)
(Continued)
4
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