Computer Hardware User Manual

New Products
16
FIND Vol.21
No.1 2003
MB90V495G MB90F897/S
EvaluationType
Item
Model
Flash memory type
Not installedROM density 64K-byte
6K-byteRAM density
CPU functions
Number of instructions：351
Maximum instruction execution time：62.5ns at an operating frequency of 4MHz (4 times the base oscillator frequency)
Available addressing types：23
Allowable program patching：2 address pointers
Maximum storage space：16M-byte
Power-saving (Standby mode) Sleep mode/Clock mode/Time-base timer mode/Stop mode/CPU intermittent mode
I/O port General-purpose I/O port (CMOS output)：34 (36
＊
) Four of them intended for higher-current output ports
Time-base timer
8-bit free-running counter
Interruption interval：1.024ms, 4.096ms, 16.834ms, 131.072ms (at an oscillation clock frequency of 4MHz)
16-bit reload timer
Number of channels：2
Count clock interval：0.25μs，0.5μs，2.0μs (Machine clock frequency 16MHz)
Available external event counting
Clock timer
15-bit free-running counter
Interruption interval：31.25ms，62.5ms，12ms，250ms，500ms，1.0ms，2.0ms (at 8.192kHz sub clock)
DTP/External interruption
Number of channels：4
Rise edge/Fall edge activated in response to the input of "H" and "L" levels
Available external interruption or extended intelligent I/O service (EI
2
OS)
10-bit A/D converter
Number of channels：8
Resolution：Either 10-bit or 8-bit
Conversion time：6.125μs (at a machine clock frequency of 16MHz, including the sampling time)
UART（SCI）
Number of channels：2
With full duplex double buffers
Transmission available in either state, synchronous or asynchronous to clock
Also can be used as serial I/O
Dedicated baud rate generator incorporated
8/16-bit PPG timer
Number of channels：2-channel (Available in the 8-bit×4-channel configuration)
PPG operation available in both the 8-bit×4-channel and 16-bit×2-channel configurations
Allowable output of pulse waveform at any desired period and duty factor
Count clock：62.5ns to 1μs (at a machine clock frequency of 16MHz)
Watchdog timer Reset occurring interval：3.58ms, 14.33ms, 57.23ms, 458.75ms (at an oscillation clock frequency of 4MHz)
16-bit I/O timer
16-bit free-running timer：1 channel
Input capture：4 channels
Delayed interruption generating
module
Interruption generating module for task changing
Used with the real-time OS
2K-byte
CMOSProcess
PGA256Package LQFP-48
4.5V to 5.5VOperating voltage 3.5V to 5.5V
＊34 for MB90897：36 for MB90F897
Table 1 Product Lineup
MB90890 Series