![](http://datasheet.mmic.net.cn/330000/MB90T678_datasheet_16438155/MB90T678_15.png)
15
MB90670/675 Series
Pin no.
QFP
-80*
2
16
Pin name
Circuit
type
Function
LQFP
-80*
1
14
LQFP
-100*
3
12
QFP
-100*
4
14
P34
B
(CMOS)
General-purpose I/O port
This function is valid when both the single-chip
mode and the hold function are disabled.
Hold request input pin
This function is valid in the mode where the
external bus is valid or when the hold function is
enabled.
General-purpose I/O port
This function is valid when both the single-chip
mode and the hold function are disabled.
Hold acknowledge output pin
This function is valid in the mode where the
external bus is valid or when the hold function is
enabled.
General-purpose I/O port
This function is valid when both the single-chip
mode and the external ready function are
disabled.
Ready input pin
This function is valid when the external ready
function is enabled in the mode where the
external bus is valid.
General-purpose I/O port
This function is valid in the single-chip mode or
when the CLK output is disabled.
CLK output pin
This function is valid when CLK output is disabled
in the mode where the external bus is valid.
General-purpose I/O port
This function is always valid.
Serial data input pin of UART0
Because this input is used as required when
UART0 is performing input operations, and it is
necessary to stop outputs by other functions
unless such outputs are made intentionally.
General-purpose I/O port
This function is valid when serial data output from
UART0 is disabled.
Serial data output pin of UART0
This function is valid when serial data output from
UART0 is enabled.
HRQ
15
17
13
15
P35
B
(CMOS)
HAK
16
18
14
16
P36
B
(CMOS)
RDY
17
19
15
17
P37
B
(CMOS)
CLK
18
20
16
18
P40
E
(CMOS/H)
SIN0
19
21
17
19
P41
E
(CMOS/H)
SOT0
*1: FPT-80P-M05
*2: FPT-80P-M06
*3: FPT-100P-M05
*4: FPT-100P-M06
(Continued)