upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 44

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

2.2 Pin States
The operation states of pins in various mode are described in Table 2-4.
AD0 to AD15
WAIT
CLKOUT
CSO, CS1
WR0, WR1
RD
ASTB
HLDAK
HLDRQ
Notes: 1. The bus control pin is shared with the port pin, so it is initialized to the input mode (port
Remark:
44
Bus Control Pin
2. The state of the pins in the idle state inserted following T3 state is shown.
mode).
Hi-Z:
Held:
L:
H:
-:
HI-Z
The state during the immediately preceding external bus cycle is held.
High impedance.
Low level output.
High level output.
Input without sampling (not acknowledged)
Reset
Note 1
Table 2-4: Pin Operation States in Various Modes
During DMA
Halt Mode
Operating
Transfer
User’s Manual U16702EE3V2UD00
Chapter 2 Pin Functions
External Bus
Operating
Operating
Interface
Mode
H
-
-
Stop Mode
Idle Mode
Hi-Z
H
L
-
-
-
Operating
Idle State
Note 2
Held
H
-
-
-
Operating
Operating
Bus Hold
Hi-Z
Hi-Z
L
-
-