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參數(shù)資料
| 型號(hào)： | M38C59MF-XXXHP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80 |
| 文件頁數(shù)： | 33/75頁 |
| 文件大?。?/td> | 995K |
| 代理商： | M38C59MF-XXXHP |
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Rev.2.00
Nov 23, 2005
page 39 of 73
REJ03B0028-0200
38C5 Group
qSerial I/O2
The serial I/O2 function can be used only for clock synchronous se-
rial I/O.
For serial I/O2, the transmitter and the receiver must use the same
clock. When the internal clock is used, transfer is started by a write
signal to the serial I/O2 register.
[Serial I/O2 control register] SIO2CON
The serial I/O2 control register contains 8 bits which control various
serial I/O functions.
Fig. 35 Structure of serial I/O2 control registers
Fig. 36 Block diagram of serial I/O2
Internal synchronous clock selection bits
b2b1b0
0 0 0 :
φSOURCE/8
0 0 1 :
φSOURCE/16
0 1 0 :
φSOURCE/32
0 1 1 :
φSOURCE/64
1 0 0 : Not available
1 0 1 : Not available
1 1 0 :
φSOURCE/128
1 1 1 :
φSOURCE/256
b7
b0
P45/SOUT2 P-channel output disable bit
0 : CMOS output (at output mode)
1 : N-channel open-drain output (at output mode)
Transfer direction selection bit
0 : LSB first
1 : MSB first
Serial I/O2 synchronous clock selection bit
0 : External clock
1 : Internal clock
SRDY2 output selection bit
0 : I/O port P47
1 : SRDY2 signal output
Serial I/O2 control register
(SIO2CON: address 001D16)
Serial I/O2 port selection bit
0 : I/O port
1 : SOUT2, SCLK2 signal pin
φ SOURCE:represents the supply source of internal clock φ.
XIN input: in the middle- or high-speed mode,
Internal on-chip oscillator divided by 4
in the on-chip oscillator mode, and
Sub clock in the low-speed mode.
P44/SIN2
P46/SCLK2
P45/SOUT2
P46 latch
P45 latch
P47 latch
P47/SRDY2
(Note)
Note: It is selected by the serial I/O2 synchronous clock
selection bit, SRDY2 output selection bit and serial I/O2
port selection bit.
(Note)
φSOURCE
Serial I/O2 port selection bit
“1”
“0”
“1”
“0”
“1”
S
C
L
K
2
External clock
Frequency
divider
1/8
1/16
1/32
1/64
1/128
1/256
Data bus
Serial I/O2
interrupt request
Serial I/O counter 2 (3)
Serial I/O shift register 2 (8)
Serial I/O2 synchronous
clock selection bit
Internal synchronous
clock selection bits
Synchronous circuit
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