h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 235

• Manufacturer Part Number: h8s-2161b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

8.4.4
Note: * Not supported by the H8S/2148B and H8S/2145B (5-V version).
Notes: The combination of bits not described in the above table must not be used.
8.4.5
Port 3 has an on-chip input pull-up MOS function that can be controlled by software. This input
pull-up MOS function can be specified as on or off on a bit-by-bit basis.
Table 8.4 summarizes the input pull-up MOS states.
Table 8.4
Legend:
Off:
On/Off: On when the pin is in the input state, P3DDR = 0, and P3PCR = 1; otherwise off.
Mode
1, 2, 3 (EXPE = 1)
2, 3 (EXPE = 0)
Operating
Mode
LPCmE
HI12E
P3nDDR
Pin Function
P37/D15/HDB7/SERIRQ * , P36/D14/HDB6/LCLK * , P35/D13/HDB5/LRESET * ,
P34/D12/HDB4/LFRAME * , P33/D11/HDB3/LAD3 * , P32/D10/HDB2/LAD2 * ,
P31/D9/HDB1/LAD1 * , P30/D8/HDB0/LAD0 *
The pin function is switched as shown below according to the combination of the HI12E bit in
SYSCR2, the LPC3E to LPC1E bits in HICR0 of host interface (LPC), the P3nDDR bit, and
operating mode.
m = 3 to 1: LPC input/output pins (SERIRQ, LCLK, LRESET, LFRAME, LAD3 to LAD0)
when at least one of LPC3E to LPC1E is set to 1.
n = 7 to 0
Input pull-up MOS is always off.
Pin Functions
Port 3 Input Pull-Up MOS
Input Pull-Up MOS States (Port 3)
Mode 1, 2, 3
input/output
(EXPE = 1)
D15 to D8
All 0
pins
—
0
Reset
Off
P37 to P30
input pins
Hardware
Standby Mode
Off
0
0
P37 to P30
output pins
Mode 2, 3 (EXPE = 0)
All 0
1
Rev. 3.00 Mar 21, 2006 page 181 of 788
Software
Standby Mode
Off
On/Off
HDB7 to HDB0
input/output
pins
—
1
Section 8 I/O Ports
In Other
Operations
Off
On/Off
REJ09B0300-0300
input/output
Not all 0
LPC
pins
0
0