M38227ECFP Renesas Electronics America, M38227ECFP Datasheet - Page 47

• 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.44 Clock generating circuit block diagram
44
I n t e r r u p t d i s a b l e f l a g I
Note : When using the low-speed mode, set the port X
I n t e r r u p t r e q u e s t
X
C I N
X
I N
Q
S
R
Reset
“ 1 ”
X
C O U T
Middle-/High-speed mode
X
Main clock stop bit
P o r t X
O U T
STP instruction
“0”
C
L o w - s p e e d m o d e
s w i t c h b i t
I n t e r n a l s y s t e m c l o c k s e l e c t i o n b i t
“ 1 ”
“0”
1/2
( N o t e )
W I T
i n s t r u c t i o n
High-speed mode
or Low-speed mode
C
switch bit to “1” .
1/4
“0”
S
R
“ 1 ”
1 / 2
Main clock division ratio selection bit
M i d d l e - s p e e d m o d e
Q
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
T i m e r 1 c o u n t
s o u r c e s e l e c t i o n
b i t
“ 1 ”
“ 0 ”
Q
MITSUBISHI MICROCOMPUTERS
S
R
T i m e r 1
STP instruction
Timing
(Internal system clock)
T i m e r 2 c o u n t
s o u r c e s e l e c t i o n
b i t
“ 1 ”
“ 0 ”
3822 Group
T i m e r 2