h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 833
![no-image](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__sml.jpg)
h8s-2158
Manufacturer Part Number
h8s-2158
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2158.pdf
(927 pages)
- Current page: 833 of 927
- Download datasheet (7Mb)
Section 27 Power-Down Modes
27.3
Medium-Speed Mode
The CPU makes a transition to medium-speed mode as soon as the current bus cycle ends
according to the setting of the SCK2 to SCK0 bits in SBYCR. In medium-speed mode, the CPU
operates on the operating clock ( /2, /4, /8, /16, or /32) specified by the SCK2 to SCK0 bits.
The bus masters other than the CPU (DTC or RFU) also operate in medium-speed mode when the
DTSPEED bit in SBYCR is cleared to 0. Note however that the DTSPEED bit must be set to 1
when the RFU is used in medium-speed mode. On-chip peripheral modules other than the bus
masters always operate on the system clock ( ).
When the DTSPEED bit in SBYCR or the EXCKS bit in BCSR2 is set to 1, the clock can be
used as the DTC/RFU operating clock or external extended area bus cycle clock.
In medium-speed mode, a bus access is executed in the specified number of states with respect to
the bus master operating clock. For example, if /4 is selected as the operating clock, on-chip
memory is accessed in 4 states, and internal I/O registers in 8 states.
By clearing all of bits SCK2 to SCK0 to 0, a transition is made to high-speed mode at the end of
the current bus cycle.
If a SLEEP instruction is executed when the SSBY bit in SBYCR is cleared to 0, and the LSON
bit in LPWRCR is cleared to 0, a transition is made to sleep mode. When sleep mode is cleared by
an interrupt, medium-speed mode is restored. When the SLEEP instruction is executed with the
SSBY bit set to 1, the LSON bit cleared to 0, and the PSS bit in TCSR (WDT_1) cleared to 0,
operation shifts to software standby mode. When software standby mode is cleared by an external
interrupt, medium-speed mode is restored.
When the RES pin is set low and medium-speed mode is cancelled, operation shifts to the reset
state. The same applies in the case of a reset caused by overflow of the watchdog timer.
When the STBY pin is driven low, a transition is made to hardware standby mode.
Figure 27.2 shows an example of medium-speed mode timing.
Rev. 3.00 Jan 25, 2006 page 781 of 872
REJ09B0286-0300
Related parts for h8s-2158
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![h8s-2138](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![h8s-2169](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![h8s-2161b](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![h8s-2110b](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![h8s-2111b](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![h8s-2172](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![h8s-2635](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![h8s-2649](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![h8s-2646](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![h8s-2628](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![HD6417709S](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas Technology Corp [Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series]
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![M30291FCTHP](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
RENESAS MCU M16C FAMILY / M16C/Tiny SERIES
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![R0K505210S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas Starter Kit for RX210
Manufacturer:
Renesas Electronics Corporation.
![R0K505630S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas StarterKit for RX630
Manufacturer:
Renesas Electronics Corporation.
![R0K50563NS000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas Starter Kit+ for RX63N
Manufacturer:
Renesas Electronics Corporation.