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MB90420/5 (A) SERIES F
1.3 Block Diagram
Figure 1.1 shows the block diagram of the MB90420/5 (A) series.
n Block diagram*
X0,X1
X0A,X1A
RSTX
P57/SGA
P56/SGO
P55(/RX0)
P54(/TX0)
P53/INT3
P52/INT2(/TX1)
P51/INT1(/RX1)
P50/INT0/ADTG
P00/SIN0/INT4
P01/SOT0/INT5
P02/SCK0/INT6
P03/SIN1/INT7
P04/SOT1
P05/SCK1/TRG
P06/PPG0/TOT1
P07/PPG1/TIN1
P10/PPG2
P11/TOT0/WOT
P12/TIN0/IN3
P13/IN2
P14/IN1
P15/IN0
Note: Specification of evaluation device
(MB90V420)
No internal ROM is provided.
The size of the internal RAM is 6 KB.
*: The MB90420 (A) series integrates 2 ch for the CAN interface and the MB90425 (A) series integrates 1
ch.
The low voltage detection reset is only provided for the MB90420A/5A series and is not provided for the
MB90420/5 series.
2
MC-16LX FAMILY 16-BIT MICROCONTROLLERS HARDWARE MANUAL
CPU
Clock controller
2
F
MC-16LX core
RAM
ROM
Sound generator
CAN Controller
Port 5
External interrupt
(8 ch)
UART0/1
Prescaler 0/1
Port 0
PPG0/1/2
Port 1
Reload timer 0/1
Watch timer
(main)
ICU0/1/2/3
Free-run timer
Fig. 1.1 Block Diagram
Interrupt controller
Low voltage detection reset
Port 8
Stepping motor
controller
0/1/2/3
Port 7
Port 6
A/D Converter
(8 ch)
Port 9
Port 4
Port 3
LCD
Controller/driver
1-6
P87/PWM2M3
P86/PWM2P3
P85/PWM1M3
P84/PWM1P3
P83/PWM2M2
P82/PWM2P2
P81/PWM1M2
P80/PWM1P2
P77/PWM2M1
P76/PWM2P1
P75/PWM1M1
P74/PWM1P1
P73/PWM2M0
P72/PWM2P0
P71/PWM1M0
P70/PWM1P0
P67-P60/
AN7-AN0
AVCC/AVSS
AVRH
P91-P90/
SEG23-SEG22
P47-P40/
SEG21-SEG14
P37-P36/
SEG13-SEG12
SEG11-SEG0
COM3-COM0
V3-V0
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