HD6412350 Hitachi, HD6412350 Datasheet - Page 34

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

Table 1-3
Type
Operating mode
control
System control
14
Pin Functions (cont)
Symbol
MD
MD
RES
STBY
BREQ
BREQO
BACK
2
0
to
TFP-120
115 to
113
73
75
88
86
87
Pin No.
FP-128
125 to
123
81
83
96
94
95
I/O
Input
Input
Input
Input
Output Bus request output: The external bus
Output Bus request acknowledge: Indicates
Name and Function
Mode pins: These pins set the
operating mode.
The relation between the settings of
pins MD
mode is shown below. These pins
should not be changed while the
H8S/2350 Series is operating.
MD2
0
1
Note: * Only applies to the H8S/2351.
Reset input: When this pin is driven
low, the chip is reset. The type of
reset can be selected according to
the NMI input level. At power-on, the
NMI pin input level should be set
high.
Standby: When this pin is driven low,
a transition is made to hardware
standby mode.
Bus request: Used by an external bus
master to issue a bus request to the
H8S/2350 Series.
request signal used when an internal
bus master accesses external space
in the external bus-released state.
that the bus has been released to an
external bus master.
MD1
0
1
0
1
2
to MD
MD0
0
1
0
1
0
1
0
1
0
and the operating
Operating
Mode
—
Mode 1
Mode 2*
Mode 3*
Mode 4
Mode 5
Mode 6*
Mode 7*