HD64F3437STF16V Renesas Electronics America, HD64F3437STF16V Datasheet - Page 465

• Manufacturer Part Number: HD64F3437STF16V
• Description: MCU 3/5V 60K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300r

Specifications of HD64F3437STF16V

• 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: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(11) Cautions on Accessing Flash Memory Control Registers
1. Flash memory control register access state in each operating mode
Table 19.17
12 V applied
to FV
12 V not applied
to FV
2. When a flash memory control register is accessed in mode 2 (expanded mode with on-chip
3. To check for 12 V application/non-application in mode 3 (single-chip mode)
The H8/3434F has flash memory control registers located at addresses H'FF80 (FLMCR),
H'FF82 (EBR1), and H'FF83 (EBR2). These registers can only be accessed when 12 V is
applied to the flash memory program power supply pin, FV
Table 19.17 shows the area accessed for the above addresses in each mode, when 12 V is and
is not applied to FV
ROM enabled)
When a flash memory control register is accessed in mode 2, it can be read or written to if 12
V is being applied to FV
essential to confirm that 12 V is being applied to the FV
When address H'FF80 is accessed in mode 3, if 12 V is being applied to FV
read/written to, and its initial value after reset is H'80. When 12 V is not being applied to FV
FLMCR is a reserved area that cannot be modified and always reads H'FF. Since bit 7
(corresponding to the V
FV
of this bit. A byte data comparison is necessary to check whether 12V is being applied. The
relevant coding is shown below.
LABEL1:
Sample program for detection of 12 V application to FV
PP
PP
PP
, application or release of 12 V to FV
Area Accessed in Each Mode with 12V Applied and Not Applied to FV
MOV.B
CMP.B
BEQ
PP
Mode 1
Reserved area
(always H'FF)
External address
space
.
PP
.
.
.
.
.
.
PP
bit) is set to 1 at this time regardless of whether 12 V is applied to
, but if not, external address space will be accessed. It is therefore
@H'FF80, R1L
#H'FF,
LABEL1
R1L
Mode 2
Flash memory control
register (initial value H'80)
External address space
PP
cannot be determined simply from the 0 or 1 status
PP
PP
pin before accessing these registers.
(mode 3)
PP
.
Mode 3
Flash memory control
register (initial value
H'80)
Reserved area
(always H'FF)
PP
, FLMCR is
PP
433
PP
,