DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 123
DF2148RTE20IV
Manufacturer Part Number
DF2148RTE20IV
Description
MCU 5V 128K I-TEMP,PB-FREE, 100-
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Specifications of DF2148RTE20IV
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
Host Interface, I²C, IrDA, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
74
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Section 2 CPU
2.8.6
Power-Down State
The power-down state includes both modes in which the CPU stops operating and modes in which
the CPU does not stop. There are five modes in which the CPU stops operating: sleep mode,
software standby mode, hardware standby mode, subsleep mode, and watch mode. There are also
three other power-down modes: medium-speed mode, module stop mode, and subactive mode. In
medium-speed mode, the CPU and other bus masters operate on a medium-speed clock. Module
stop mode permits halting of the operation of individual modules, other than the CPU. Subactive
mode, subsleep mode, and watch mode are power-down modes that use subclock input. For
details, refer to section 25, Power-Down State.
Sleep Mode
A transition to sleep mode is made if the SLEEP instruction is executed while the software
standby bit (SSBY) in the standby control register (SBYCR) and the LSON bit in the low-power
control register (LPWRCR) are both cleared to 0. In sleep mode, CPU operations stop
immediately after execution of the SLEEP instruction. The contents of CPU registers are retained.
Software Standby Mode
A transition to software standby mode is made if the SLEEP instruction is executed while the
SSBY bit in SBYCR is set to 1 and the LSON bit in LPWRCR and the PSS bit in the WDT1 timer
control/status register (TCSR) are both cleared to 0. In software standby mode, the CPU and clock
halt and all MCU operations stop. As long as a specified voltage is supplied, the contents of CPU
registers and on-chip RAM are retained. The I/O ports also remain in their existing states.
Hardware Standby Mode
A transition to hardware standby mode is made when the STBY pin goes low. In hardware
standby mode, the CPU and clock halt and all MCU operations stop. The on-chip supporting
modules are reset, but as long as a specified voltage is supplied, on-chip RAM contents are
retained.
Rev. 4.00 Sep 27, 2006 page 77 of 1130
REJ09B0327-0400
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