HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 129

• Manufacturer Part Number: HD64F36077GHV
• Description: 16BIT MCU FLASH 56K, SMD, LQFP64
• Manufacturer: Renesas Electronics America

Specifications of HD64F36077GHV

• No. Of I/o's: 47
• Ram Memory Size: 4KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• Digital Ic Case Style: LQFP
• Supply Voltage Range: 4.5V
• Core Size: 16bit
• Program Memory Size: 56KB
• Oscillator Type: External Only
• Controller Family/series: H8/300H
• Peripherals: ADC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6.2.1
In sleep mode, CPU operation is halted but the on-chip peripheral modules function at the clock
frequency set by the MA2, MA1, and MA0 bits in SYSCR2. CPU register contents are retained.
When an interrupt is requested, sleep mode is cleared and interrupt exception handling starts.
Sleep mode is not cleared if the I bit of the condition code register (CCR) is set to 1 or the
requested interrupt is disabled in the interrupt enable register. After sleep mode is cleared, a
transition is made to active mode when the LSON bit in SYSCR2 is 0, and a transition is made to
subactive mode when the bit is 1.
When the RES pin goes low, the CPU goes into the reset state and sleep mode is cleared.
6.2.2
In standby mode, the external clock oscillator is halted, and operation of the CPU and on-chip
peripheral modules is halted. However, as long as the rated voltage is supplied, the contents of
CPU registers, on-chip RAM, and some on-chip peripheral module registers are retained. On-chip
RAM contents will be retained as long as the voltage set by the RAM data retention voltage is
provided. The I/O ports go to the high-impedance state.
Standby mode is cleared by an interrupt. When an interrupt is requested, the on-chip oscillator
starts functioning. The external oscillator also starts functioning when used. After the time set by
the STS2 to STS0 bits in SYSCR1 has elapsed, standby mode is cleared and the CPU starts
interrupt exception handling. Standby mode is not cleared if the I bit in the condition code register
(CCR) is set to 1 or the requested interrupt is disabled by the interrupt enable bit.
When the RES pin is driven low in standby mode, the on-chip oscillator starts functioning. Once
the oscillator starts, the system clock is supplied to the entire chip. The RES pin must be kept low
for the rated period set by the power-on reset circuit, until the oscillator stabilizes. If the RES pin
is driven high after the oscillator has stabilized, the internal reset signal is cleared and the CPU
starts reset exception handling.
Sleep Mode
Standby Mode
Rev. 1.00 Sep. 16, 2005 Page 99 of 490
Section 6 Power-Down Modes
REJ09B0216-0100