參數(shù)資料
型號: MB91V301CR-ESE1
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 68 MHz, RISC MICROCONTROLLER, CPGA179
封裝: CERAMIC, PGA-179
文件頁數(shù): 35/139頁
文件大?。?/td> 1482K
代理商: MB91V301CR-ESE1
MB91301 Series
13
(Continued)
Pin no.
Pin name
I/O circuit type
Function
MB91301/
302A
MB91V301/
V301A
MB91301,
MB91V301
MB91302A,
MB91V301A
42
51
WR
J
[WR] Memory write strobe output. This pin
has this function when WEXE bit of port
function register is enabled.
SWE
[SWE] Write output for SDRAM. This pin
has this function when WEXE bit of port
function register is enabled.
P96
[P96] General purpose input/output port.
This pin has this function when WEXE bit of
port function register is general purpose
port.
45 to 52
54 to 61
A00 to A07
C
External address bit 0 to 7.
55 to 62
64 to 71
A08 to A15
C
External address bit 8 to 15.
64 to 67
74 to 77
A16 to A19
J
External address bit 16 to 19. It is available
in external bus mode.
P60 to P63
Can be used as ports when external
address bus is not used.
68
78
SDA0
T
[SDA0] Data input pin for I2C bus function.
This function is enable when typical opera-
tion of I2C is enable. The port output must
remains off unless intentionally turned on.
(Open drain output) (This function is only
for MB91302A, MB91V301A.)
A20
J
[A20] External address bus bit 20.
This function is enable during prohibited I2C
operation and using external bus.
P64
[P64] General-purpose I/O port.
This function is enable during prohibited I2C
and nonused external address bus.
69
79
SCL0
T
[SCL0] CLK input pin for I2Cbus function.
This function is enable when typical opera-
tion of I2C is enable. The port output must
remains off unless intentionally turned on.
(open drain output) (This function is only
for MB91302A, MB91V301A.)
A21
J
[A21] External address bus bit 21.
This function is enable during prohibited I2C
operation and using external bus.
P65
[P65] General-purpose I/O port.
This function is enable during prohibited I2C
and nonused external address bus.
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