M38227ECFP Renesas Electronics America, M38227ECFP Datasheet - Page 48

• Manufacturer Part Number: M38227ECFP
• Description: IC 740 MCU EPROM 48K 80QFP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M38227ECFP

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SIO, UART/USART
• Peripherals: LCD
• Number Of I /o: 49
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: OTP
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Fig. 45 State transitions of system clock
N o t e s 1 : S w i t c h t h e m o d e b y t h e a l l o w s s h o w n b e t w e e n t h e m o d e b l o c k s . ( D o n o t s w i t c h b e t w e e n t h e m o d e d i r e c t l y w i t h o u t a n a l l o w . )
M i d d l e - s p e e d m o d e ( f ( ) = 1 M H z )
L o w - s p e e d m o d e ( f ( ) = 1 6 k H z )
M i d d l e - s p e e d m o d e ( f ( ) = 1 M H z )
L o w - s p e e d m o d e ( f ( ) = 1 6 k H z )
C M
C M
C M
C M
2 : T h e a l l m o d e s c a n b e s w i t c h e d t o t h e s t o p m o d e o r t h e w a i t m o d e a n d r e t u r n e d t o t h e s o u r c e m o d e w h e n t h e s t o p m o d e o r t h e w a i t m o d e i s
3 : T i m e r a n d L C D o p e r a t e i n t h e w a i t m o d e .
4 : W h e n t h e s t o p m o d e i s e n d e d , a d e l a y o f a p p r o x i m a t e l y 1 m s o c c u r s a u t o m a t i c a l l y b y t i m e r 1 a n d t i m e r 2 i n m i d d l e - / h i g h - s p e e d m o d e .
5 : W h e n t h e s t o p m o d e i s e n d e d , a d e l a y o f a p p r o x i m a t e l y 0 . 2 5 s o c c u r s a u t o m a t i c a l l y b y t i m e r 1 a n d t i m e r 2 i n l o w - s p e e d m o d e .
6 : W a i t u n t i l o s c i l l a t i o n s t a b i l i z e s a f t e r o s c i l l a t i n g t h e m a i n c l o c k X
7 : T h e e x a m p l e a s s u m e s t h a t 8 M H z i s b e i n g a p p l i e d t o t h e X
C M
C M
C M
C M
C M
C M
C M
C M
C M
C M
C M
C M
7
6
5
4
7
6
5
4
7
6
5
4
7
6
5
4
= 1 ( 3 2 k H z s e l e c t e d )
= 1 ( M i d d l e - s p e e d )
= 0 ( 8 M H z o s c i l l a t i n g )
= 1 ( 3 2 k H z o s c i l l a t i n g )
e n d e d .
= 0 ( 8 M H z s e l e c t e d )
= 1 ( M i d d l e - s p e e d )
= 0 ( 8 M H z o s c i l l a t i n g )
= 0 ( 3 2 k H z s t o p p e d )
= 0 ( 8 M H z s e l e c t e d )
= 1 ( M i d d l e - s p e e d )
= 0 ( 8 M H z o s c i l l a t i n g )
= 1 ( 3 2 k H z o s c i l l a t i n g )
= 1 ( 3 2 k H z s e l e c t e d )
= 1 ( M i d d l e - s p e e d )
= 1 ( 8 M H z s t o p p e d )
= 1 ( 3 2 k H z o s c i l l a t i n g )
Reset
“1”
“1”
“1”
“1”
CM
CM
CM
CM
6
6
6
6
“ 0 ”
“ 0 ”
“ 0 ”
“ 0 ”
High-speed mode (f( ) = 4 MHz)
High-speed mode (f( ) = 4 MHz)
L o w - s p e e d m o d e ( f ( ) = 1 6 k H z )
L o w - s p e e d m o d e ( f ( ) = 1 6 k H z )
CM
CM
CM
CM
CM
CM
CM
CM
C M
C M
C M
C M
C M
C M
C M
C M
7
6
5
4
7
6
5
4
7
6
5
4
7
6
5
4
= 0 (8 MHz selected)
= 0 (High-speed)
= 0 (8 MHz oscillating)
= 1 (32 kHz oscillating)
= 1 ( 3 2 k H z s e l e c t e d )
= 0 ( H i g h - s p e e d )
= 1 ( 8 M H z s t o p p e d )
= 1 ( 3 2 k H z o s c i l l a t i n g )
= 0 ( 8 M H z s e l e c t e d )
= 0 ( H i g h - s p e e d )
= 0 ( 8 M H z o s c i l l a t i n g )
= 0 ( 3 2 k H z s t o p p e d )
= 1 (32 kHz selected)
= 0 (High-speed)
= 0 (8 MHz oscillating)
= 1 (32 kHz oscillating)
I N
p i n a n d 3 2 k H z t o t h e X
I N
b e f o r e t h e s w i t c h i n g f r o m t h e l o w - s p e e d m o d e t o m i d d l e - / h i g h - s p e e d m o d e .
b7
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
C I N
p i n .
b4
CM
CM
CM
CM
i n d i c a t e s t h e i n t e r n a l c l o c k .
4
5
6
7
MITSUBISHI MICROCOMPUTERS
0: I/O port
1: X
0: Oscillating
1: Stopped
0: f(X
1: f(X
0: X
1: X
: Port Xc switch bit
: Main clock (X
: Main clock division ratio selection bit
: Internal system clock selection bit
(middle-/high-speed mode)
(low-speed mode)
CIN
IN
CIN
–X
IN
IN
, X
–X
CPU mode register
(CPUM : address 003B
)/2 (high-speed mode)
)/8 (middle-speed mode)
OUT
COUT
COUT
selected
selected
IN
–X
OUT
3822 Group
) stop bit
16
)
45