參數(shù)資料
型號： M38034M4H-XXXHP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.4 MHz, MICROCONTROLLER, PQFP64
封裝： 10 X 10 MM, 0.50 MM PITCH, PLASTIC, LQFP-64
文件頁數(shù)： 66/119頁
文件大?。?/td> 1818K
代理商： M38034M4H-XXXHP
Rev.3.11
Apr 5, 2006
Page 48 of 113
REJ03B0017-0311
3803 Group (Spec.H)
Serial I/O2
The serial I/O2 function can be used only for clock synchronous
serial I/O.
For clock synchronous serial I/O2, the transmitter and the
receiver must use the same clock. If the internal clock is used,
transfer is started by a write signal to the serial I/O2 register
(address 001F16).
[Serial I/O2 Control Register (SIO2CON)] 001D16
The serial I/O2 control register contains eight bits which control
various serial I/O2 functions.
Fig 38. Structure of Serial I/O2 control register
Fig 39. Block diagram of serial I/O2
Serial I/O2 control register
(SIO2CON : address 001D16)
b7
Internal synchronous clock selection bits
b2 b1 b0
00 0: f(XIN)/8 (f(XCIN)/8 in low-speed mode)
00 1: f(XIN)/16 (f(XCIN)/16 in low-speed mode)
01 0: f(XIN)/32 (f(XCIN)/32 in low-speed mode)
01 1: f(XIN)/64 (f(XCIN)/64 in low-speed mode)
11 0: f(XIN)/128 f(XCIN)/128 in low-speed mode)
11 1: f(XIN)/256 (f(XCIN)/256 in low-speed mode)
Serial I/O2 port selection bit
0: I/O port
1: SOUT2, SCLK2 signal output
SRDY2 output enable bit
0: I/O port
1: SRDY2 signal output
Transfer direction selection bit
0: LSB first
1: MSB first
Serial I/O2 synchronous clock selection bit
0: External clock
1: Internal clock
P51/SOUT2 P-channel output disable bit
0: CMOS output (in output mode)
1: N-channel open drain output (in output mode)
b0
f(XIN)
Serial I/O counter 2 (3)
Serial I/O2 register (8)
Synchronization
circuit
“1”
“0”
“1”
“0”
“1”
S
CL
K2
“0”
“1”
Di
v
id
e
r
1/8
1/16
1/32
1/64
1/128
1/256
Data bus
Serial I/O2
interrupt request
Serial I/O2 port selection bit
Serial I/O2 synchronous
clock selection bit
SRDY2 output enable bit
External clock
Internal synchronous
clock selection bits
P52/SCLK2
P51/SOUT2
P50/SIN2
P52 latch
P51 latch
P53 latch
P53/SRDY2
(f(XCIN) in low-speed mode)
SRDY2
Address 001F16
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