HD64F3687GH Renesas Electronics America, HD64F3687GH Datasheet - Page 130
HD64F3687GH
Manufacturer Part Number
HD64F3687GH
Description
IC H8 MCU FLASH 56K 64-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300H Tinyr
Datasheet
1.HD64F3684GFPV.pdf
(538 pages)
Specifications of HD64F3687GH
Core Processor
H8/300H
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, SCI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
45
Program Memory Size
56KB (56K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
64-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Section 7 ROM
4. After matching the bit rates, the chip transmits one H'00 byte to the host to indicate the
5. In boot mode, a part of the on-chip RAM area is used by the boot program. The area H'F780 to
6. Before branching to the programming control program, the chip terminates transfer operations
7. Boot mode can be cleared by a reset. End the reset after driving the reset pin low, waiting at
8. Do not change the TEST pin and NMI pin input levels in boot mode.
Rev.5.00 Nov. 02, 2005 Page 96 of 500
REJ09B0027-0500
pulled up on the board if necessary. After the reset is complete, it takes approximately 100
states before the chip is ready to measure the low-level period.
completion of bit rate adjustment. The host should confirm that this adjustment end indication
(H'00) has been received normally, and transmit one H'55 byte to the chip. If reception could
not be performed normally, initiate boot mode again by a reset. Depending on the host's
transfer bit rate and system clock frequency of this LSI, there will be a discrepancy between
the bit rates of the host and the chip. To operate the SCI properly, set the host's transfer bit
rate and system clock frequency of this LSI within the ranges listed in table 7.3.
H'FEEF is the area to which the programming control program is transferred from the host.
The boot program area cannot be used until the execution state in boot mode switches to the
programming control program.
by SCI3 (by clearing the RE and TE bits in SCR to 0), however the adjusted bit rate value
remains set in BRR. Therefore, the programming control program can still use it for transfer
of program data or verify data with the host. The TxD pin is high (PCR22 = 1, P22 = 1). The
contents of the CPU general registers are undefined immediately after branching to the
programming control program. These registers must be initialized at the beginning of the
programming control program, as the stack pointer (SP), in particular, is used implicitly in
subroutine calls, etc.
least 20 states, and then setting the NMI pin. Boot mode is also cleared when a WDT overflow
occurs.
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