HD64F3337YCP16 Renesas Electronics America, HD64F3337YCP16 Datasheet - Page 264

• Manufacturer Part Number: HD64F3337YCP16
• Description: IC H8 MCU FLASH 60K 84PLCC
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300r

Specifications of HD64F3337YCP16

• Core Processor: H8/300
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: Host Interface, I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 84-PLCC
• Package: 84PLCC
• Family Name: H8
• Maximum Speed: 16 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 74
• Interface Type: HIF/I2C/SCI
• On-chip Adc: 8-chx10-bit
• On-chip Dac: 2-chx8-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

11.4.4
If a switch is made between watchdog timer mode and interval timer mode while the WDT is
operating, correct operation may not be performed. The WDT must be stopped (by clearing the
TME bit to 0) before changing the timer mode.
11.4.5
The following points should be noted when using the microcomputer’s on-chip watchdog timer to
detect program runaway.
During program runaway, instructions other than the usual instructions may be executed. If an
instruction reserved for system use is executed as a result of runaway, the watchdog timer may
sometimes stop, preventing detection of the runaway.
This problem can be avoided by making the following settings in the program.
1. Set code H'0004 in ROM address H'0002.
2. Set code H'56F0 in ROM address H'0004.
As system reserved addresses may be used by an emulator, the above settings should only be made
for the real chip.
232
Switching between Watchdog Timer Mode and Interval Timer Mode
Detection of Program Runaway