![](http://datasheet.mmic.net.cn/330000/MB90V520A_datasheet_16438173/MB90V520A_5.png)
MB90520A/520B Series
5
(Continued)
*1 : As for the necessity of a DIP switch setting (S2) when using the emulation pod (MB2145-507) .
Refer to the hardware manual for the emulation pod (MB2145-507) fomr details.
*2 : Take note of the maximum operating frequency and A/D converter precision restrictions when operating at 3.0 V
to 3.6 V. See the “Electrical Characteristics” section for details.
Parameter
Part
Number
MB90522A
MB90523A
MB90522B
MB90523B
MB90F523B MB90V520A
Clock timer
15-bit timer
Interrupt interval : 0.438, 0.5, or 2.0
μ
s for sub-clock frequency
=
32.768 kHz
Number of channels : 1 (Can be used in 2
×
8-bit channel mode)
Can generate a pulse waveform output with specified period and 0 to 100
%
duty ratio.
Number of channels : 1 (Can be used in 2
×
8-bit channel mode)
External event inputs : 6 channels
Reload/compare function : 8-bit
×
2 channels
Clock output frequency : Machine clock/2
1
to machine clock/2
8
8/16-bit PPG timer
8/16 -bit up/down
counter/timers
Clock monitor
Delayed interrupt
generation module
Interrupt generation module for task switching. (Used by REALOS.)
DTP/External
interrupts
Input channels : 8
Generates interrupts to the CPU on rising edges, falling edges with input “H” level, or “L”
level.
Can be used for external event interrupts and to activate EI
2
OS.
Wakeup interrupts
Input channels : 8
Triggered by “L” level.
8/10-bit A/D converter
(successive
approximation type)
Number of channels : 8
Resolution : 8-bit or 10-bit selectable
Conversion can be performed sequentially for multiple consecutive channels.
Single-shot conversion mode : Converts specified channel once only.
Continuous conversion mode : Repeatedly converts specified channel.
Intermittent conversion mode : Converts specified channel then halts temporarily.
Number of channels : 2
Resolution : 8-bit
8-bit D/A converter
(R-2R type)
UART (SCI)
Number of channels : 1
Clock synchronous transfer : 62.5 Kbps to 1 Mbps
Clock asynchronous transfer : 1202 bps to 31250 bps
Supports bi-directional and master-slave communications.
Extended I/O serial
interface
Number of channels : 2
Clock synchronous transfer : 31.25 Kbps to 1 Mbps (Using internal shift clock)
Transmission format : Selectable LSB-first or MSB-first
LCD controller/driver
Number of common outputs : 4
Number of segment outputs : 32
Number of power supply pins for LCD drive : 4
LCD display memory : 16 bytes
Divider resistor for LCD drive : Internal