h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 594

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 17 Host Interface [H8S/2138 Group]
functions of these pins (input block) are similarly fixed internally. As a result, the host interface
I/O pins (HDB7 to HDB0) also go to the high-impedance state.
This state is maintained while the HIFSD pin is low, and when the HIFSD pin returns to the high-
level state, the pins are restored to their normal operation as host interface pins.
Table 17.9 shows the scope of HIF pin shutdown in slave mode.
Table 17.9 Scope of HIF Pin Shutdown in Slave Mode
Abbreviation
IOR
IOW
CS1
CS2
ECS2
HA0
HDB7 to
HDB0
HIRQ11
HIRQ1
HIRQ12
GA20
HIFSD
Notes: Slave mode: Single-chip mode and HI12E = 1
Rev. 4.00 Jun 06, 2006 page 540 of 1004
REJ09B0301-0400
O: Pins shut down by shutdown function
—: Pin not shut down
: Pins shut down only when the HIF function is selected by means of a register setting
The IRQ2/ADTRG input signal is also fixed in the case of P90 shutdown, the
TMCI1/HSYNCI signal in the case of P43 shutdown, and the TMRI/CSYNCI in the case
of P45 shutdown.
Port
P93
P94
P95
P81
P90
P80
P37 to
P30
P43
P44
P45
P81
P82
Scope of
Shutdown in
Slave Mode
O
O
O
O
O
—
I/O
Input
Input
Input
Input
Input
Input
I/O
Output
Output
Output
Output
Input
Selection Conditions
Slave mode
Slave mode
Slave mode
Slave mode and CS2E = 1 and FGA20E = 0
Slave mode and CS2E = 1 and FGA20E = 1
Slave mode
Slave mode
Slave mode and CS2E = 1 and P43DDR = 1
Slave mode and P44DDR = 1
Slave mode and P45DDR = 1
Slave mode and FGA20E = 1
Slave mode and SDE = 1