D12321VF20V Renesas Electronics America, D12321VF20V Datasheet - Page 825

• Manufacturer Part Number: D12321VF20V
• Description: IC H8S/2321 MCU ROMLESS 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12321VF20V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 86
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

19.13.3 Flash Memory Operating Modes
Mode Transitions: When the mode pins and the FWE pin are set in the reset state and a reset-
start is executed, the chip enters one of the operating modes shown in figure 19.30. In user mode,
flash memory can be read but not programmed or erased.
Flash memory can be programmed and erased in boot mode, user program mode, and PROM
mode.
Notes: Only make a transition between user mode and user program mode when the CPU is
FWE = 1,
SWE = 1
(on-chip ROM
User mode
enabled)
not accessing the flash memory.
* MD0 = 0, MD1 = 0, MD2 = 0, P66 = 1, P65 = 0, P64 = 0
On-board programming mode
program mode
FWE = 0
or SWE = 0
User
Figure 19.30 Flash Memory Mode Transitions
MD1 = 1,
MD2 = 1,
FWE = 0
RES = 0
RES = 0
FWE = 1,
MD1 = 1,
MD2 = 0
Reset state
Boot mode
Rev.6.00 Sep. 27, 2007 Page 793 of 1268
RES = 0
*
RES = 0
REJ09B0220-0600
PROM mode
Section 19 ROM