DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 803
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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25.6
25.6.1
If a SLEEP instruction is executed when the SSBY bit in SBYCR is set to 1, the LSON bit in
LPWRCR is cleared to 0, and the PSS bit in TCSR (WDT1) is cleared to 0, software standby
mode is entered. In this mode, the CPU, on-chip supporting modules, and oscillator all stop.
However, the contents of the CPU’s internal registers, RAM data, and the states of on-chip
supporting modules other than the SCI, PWM, and PWMX, and of the I/O ports, are retained.
In this mode the oscillator stops, and therefore power dissipation is significantly reduced.
25.6.2
Software standby mode is cleared by an external interrupt (NMI pin, or pin IRQ0, IRQ1, IRQ2,
IRQ6, or IRQ7), or by means of the RES pin or STBY pin.
Clearing with an Interrupt: When an NMI, IRQ0, IRQ1, IRQ2, IRQ6, or IRQ7 interrupt request
signal is input, clock oscillation starts, and after the elapse of the time set in bits STS2 to STS0 in
SYSCR, stable clocks are supplied to the entire chip, software standby mode is cleared, and
interrupt exception handling is started.
Software standby mode cannot be cleared with an IRQ0, IRQ1, IRQ2, IRQ6, or IRQ7 interrupt if
the corresponding enable bit has been cleared to 0 or has been masked by the CPU.
Clearing with the RES
same time as clock oscillation starts, clocks are supplied to the entire chip. Note that the RES pin
must be held low until clock oscillation stabilizes. When the RES pin goes high, the CPU begins
reset exception handling.
Clearing with the STBY
standby mode.
25.6.3
Bits STS2 to STS0 in SBYCR should be set as described below.
Software Standby Mode
Clearing Software Standby Mode
Setting Oscillation Settling Time after Clearing Software Standby Mode
Software Standby Mode
RES Pin: When the RES pin is driven low, clock oscillation is started. At the
RES
RES
STBY Pin: When the STBY pin is driven low, a transition is made to hardware
STBY
STBY
Rev. 4.00 Sep 27, 2006 page 757 of 1130
Section 25 Power-Down State
REJ09B0327-0400
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