M38227ECFP Renesas Electronics America, M38227ECFP Datasheet - Page 35

• 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. 29 Structure of serial I/O control registers
32
b 7
b 7
b0
b0
Serial I/O status register
(SIOSTS : address 0019
U A R T c o n t r o l r e g i s t e r
( U A R T C O N : a d d r e s s 0 0 1 B
T r a n s m i t b u f f e r e m p t y f l a g ( T B E )
0 : B u f f e r f u l l
1 : B u f f e r e m p t y
R e c e i v e b u f f e r f u l l f l a g ( R B F )
0 : B u f f e r e m p t y
1 : B u f f e r f u l l
T r a n s m i t s h i f t r e g i s t e r s h i f t c o m p l e t i o n f l a g ( T S C )
0 : T r a n s m i t s h i f t i n p r o g r e s s
1 : T r a n s m i t s h i f t c o m p l e t e d
O v e r r u n e r r o r f l a g ( O E )
0 : N o e r r o r
1 : O v e r r u n e r r o r
P a r i t y e r r o r f l a g ( P E )
0 : N o e r r o r
1 : P a r i t y e r r o r
F r a m i n g e r r o r f l a g ( F E )
0 : N o e r r o r
1 : F r a m i n g e r r o r
S u m m i n g e r r o r f l a g ( S E )
0 : ( O E ) U ( P E ) U ( F E ) = 0
1 : ( O E ) U ( P E ) U ( F E ) = 1
N o t u s e d ( r e t u r n s “ 1 ” w h e n r e a d )
Character length selection bit (CHAS)
0: 8 bits
1: 7 bits
Parity enable bit (PARE)
0: Parity checking disabled
1: Parity checking enabled
Parity selection bit (PARS)
0: Even parity
1: Odd parity
Stop bit length selection bit (STPS)
0: 1 stop bit
1: 2 stop bits
P4
0: CMOS output (in output mode)
1: N-channel open-drain output (in output mode)
Not used (return “1” when read)
5
/T
X
D P-channel output disable bit (POFF)
16
)
1 6
)
b7
b0
S e r i a l I / O c o n t r o l r e g i s t e r
( S I O C O N : a d d r e s s 0 0 1 A
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
BRG count source selection bit (CSS)
0: f(X
1: f(X
Serial I/O synchronization clock selection bit (SCS)
0: BRG output divided by 4 when clock synchronized serial
1: External clock input when clock synchronized serial I/O is
S
0: P4
1: P4
Transmit interrupt source selection bit (TIC)
0: Interrupt when transmit buffer has emptied
1: Interrupt when transmit shift operation is completed
Transmit enable bit (TE)
0: Transmit disabled
1: Transmit enabled
Receive enable bit (RE)
0: Receive disabled
1: Receive enabled
Serial I/O mode selection bit (SIOM)
0: Asynchronous serial I/O (UART)
1: Clock synchronous serial I/O
Serial I/O enable bit (SIOE)
0: Serial I/O disabled
1: Serial I/O enabled
RDY
(pins P4
(pins P4
I/O is selected.
BRG output divided by 16 when UART is selected.
selected.
External clock input divided by 16 when UART is selected.
IN
IN
7
7
output enable bit (SRDY)
pin operates as ordinary I/O pin
pin operates as S
) (f(X
)/4 (f(X
4
4
–P4
–P4
MITSUBISHI MICROCOMPUTERS
CIN
CIN
7
7
) in low-speed mode)
operate as ordinary I/O pins)
operate as serial I/O pins)
)/4 in low-speed mode)
1 6
)
RDY
output pin
3822 Group