M38027E8FP Renesas Electronics America, M38027E8FP Datasheet - Page 31

• Manufacturer Part Number: M38027E8FP
• Description: MCU 8-Bit 740 CISC 32KB EPROM 5V 64-Pin PQFP
• Manufacturer: Renesas Electronics America

Specifications of M38027E8FP

• Package: 64PQFP
• Family Name: 740
• Maximum Speed: 8 MHz
• Ram Size: 1 KB
• Program Memory Size: 32 KB
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Program Memory Type: EPROM
• On-chip Adc: 8-chx8-bit
• On-chip Dac: 2-chx8-bit
• Operating Temperature: -20 to 85 °C
• Number Of Timers: 4

level (the power source voltage should be between 4.0 V and 5.5
V), reset is released. Internal operation begin until after 8 to 13 X
3.0 V (Extended operating temperature version : the reset input
voltage is less than 0.8 V for V
Reset Circuit
To reset the microcomputer, the RESET pin should be held at an
“L” level for 2 s or more. Then the RESET pin is returned to an “H”
clock cycles are completed. After the reset is completed, the pro-
gram starts from the address contained in address FFFD
order byte) and address FFFC
Make sure that the reset input voltage is less than 0.6 V for V
Fig. 26 Example of reset circuit
28
Power source
Reset input
voltage
voltage
M51953AL
1
3
0V
0V
5
4
0.1
16
CC
F
(low-order byte).
of 4.0 V).
4.0V
0.8V
RESET
V
V
3802 group
CC
SS
16
(high-
CC
IN
of
Fig. 27 Internal status of microcomputer after reset
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(25)
(26)
(27)
(28)
(29)
(30)
(31)
Note.
Interrupt edge selection register
Port P0 direction register
Port P1 direction register
Port P2 direction register
Port P3 direction register
Port P4 direction register
Port P5 direction register
Port P6 direction register
Serial I/O1 status register
Serial I/O1 control register
UART control register
Serial I/O2 control register
Prescaler 12
Timer 1
Timer 2
Timer XY mode register
Prescaler X
Timer X
Prescaler Y
Timer Y
PWM control register
AD/DA control register
D-A1 conversion register
D-A2 conversion register
CPU mode register
Interrupt request register 1
Interrupt request register 2
Interrupt control register 1
Interrupt control register 2
Processor status register
Program counter
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
: Undefined
: The initial values of CM
CNV
The contents of all other registers and RAM are undefined
after a reset, so they must be initialized by software.
SS
pin.
MITSUBISHI MICROCOMPUTERS
1
are determined by the level at the
(0001
(0003
(0005
(0007
(0009
(000B
(000D
(0019
(001A
(001B
(001D
(0020
(0021
(0022
(0023
(0024
(0025
(0026
(0027
(002B
(0034
(0036
(0037
(003A
(003B
(003C
(003D
(003E
(003F
Address
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
(PC
(PC
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
) · · ·
(PS)
3802 Group
H
L
)
)
Contents of address FFFC
Contents of address FFFD
1 0 0 0 0 0
1 1 1 0 0 0
0 0 0 0 1 0
0 0 0 0 0 0
Register contents
00
00
00
00
00
00
00
00
00
FF
01
FF
00
FF
FF
FF
FF
00
00
00
00
00
00
00
00
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
1
0
0
0
16
0
0
0
0
16