DF36054GFPJV Renesas Electronics America, DF36054GFPJV Datasheet - Page 345

• Manufacturer Part Number: DF36054GFPJV
• Description: MCU 3/5V 32K J-TEMP PB-FREE 64-L
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of DF36054GFPJV

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SSU
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 45
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

15.3.13 Unread Message Status Register (UMSR)
UMSR is a status flag that indicates that an unread message in each Mailbox has been overwritten
by a new receive message or a new receive message has been discarded.
Note:
Bit
7 to 4
3
2
1
0
*
Bit Name
—
MB3
MB2
MB1
MB0
Only 1 can be written to clear the flag.
Initial
Value
All 0
0
0
0
0
R/W
—
R/(W)*
R/(W)*
R/(W)*
R/(W)*
Description
Reserved
These bits are always read as 0.
Status flags indicating that a new receive message has
overwritten/overrun an unread message.
[Setting condition]
When a new message is received before the
corresponding bit in RXPR or RFPR is cleared to 0
[Clearing condition]
When 1 is written to these bits
Section 15 Controller Area Network for Tiny (TinyCAN)
Rev. 4.00 Mar. 15, 2006 Page 311 of 556
REJ09B0026-0400