HD64F3337YCP16 Renesas Electronics America, HD64F3337YCP16 Datasheet - Page 260
HD64F3337YCP16
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
-
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11.2.4
The watchdog timer’s TCNT and TCSR registers are more difficult to write to than other registers.
The procedures for writing and reading these registers are given below.
Writing to TCNT and TCSR: Word access is required. Byte data transfer instructions cannot be
used for write access.
The TCNT and TCSR registers have the same write address. The write data must be contained in
the lower byte of a word written at this address. The upper byte must contain H'5A (password for
TCNT) or H'A5 (password for TCSR). See figure 11.2. The result of the access depicted in figure
11.2 is to transfer the write data from the lower byte to TCNT or TCSR.
Reading TCNT and TCSR: The read addresses are H'FFA8 for TCSR and H'FFA9 for TCNT, as
indicated in table 11.2.
These two registers are read like other registers. Byte access instructions can be used.
Table 11.2 Read Addresses of TCNT and TCSR
Read Address
H'FFA8
H'FFA9
228
Register Access
Writing to TCNT
Writing to TCSR
Address
Address
Figure 11.2 Writing to TCNT and TCSR
Register
TCSR
TCNT
H'FFA8
H'FFA8
15
15
H'5A
H'A5
8 7
8 7
Write data
Write data
0
0
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