UPD70F3765GF-GAT-AX Renesas Electronics America, UPD70F3765GF-GAT-AX Datasheet - Page 992

• Manufacturer Part Number: UPD70F3765GF-GAT-AX
• Description: MCU 32BIT V850ES/JX3-H 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Hr

Specifications of UPD70F3765GF-GAT-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 48MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART, USB
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 96
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

V850ES/JG3-H, V850ES/JH3-H
20.10.2 Transmit history list function
which each data frame or remote frame was received and stored. The THL consists of storage elements equivalent to up
to seven messages, the last out-message pointer (LOPT) with the corresponding C0LOPT register, and the transmit
history list get pointer (TGPT) with the corresponding C0TGPT register.
operation modes.
reading the C0LOPT register, therefore, the number of the message buffer that transmitted a data frame or remote frame
first can be checked. The LOPT pointer is utilized as a write pointer that indicates to what part of the THL a message
buffer number is recorded. Any time a data frame or remote frame is transmitted, the corresponding message buffer
number is recorded to the THL element indicated by the LOPT pointer. Each time recording to the THL has been
completed, the LOPT pointer is automatically incremented. In this way, the number of the message buffer that has
received and stored a frame will be recorded chronologically.
pointer indicates the first THL element that the CPU has not yet read. By reading the C0TGPT register by software, the
number of a message buffer that has completed transmission can be read. Each time a message buffer number is read
from the C0TGPT register, the TGPT pointer is automatically incremented.
pointer match) is set to 1. This indicates that no message buffer numbers that have not been read remain in the THL. If a
new message buffer number is recorded, the LOPT pointer is incremented and because its value no longer matches the
value of the TGPT pointer, the THPM bit is cleared. In other words, the numbers of the unread message buffers exist in
the THL.
list overflow) of the C0TGPT register is set to 1. This indicates that the THL is full of message buffer numbers that have
not been read. If a new message is received and stored, the message buffer number recorded last is overwritten by the
number of the message buffer that received and stored the new message. After the TOVF bit has been set (1), therefore,
the recorded message buffer numbers in the THL do not completely reflect chronological order. However the transmitted
messages can be found by a CPU search applied to all transmit message buffers unless the CPU has not overwritten a
transmit object in one of these buffers beforehand. In total up to six transmission completions can occur without
overflowing the THL.
R01UH0042EJ0400 Rev.4.00
Sep 30, 2010
The transmit history list (THL) function records in the transmit history list the number of the transmit message buffer in
The THL is undefined immediately after the transition of the CAN module from the initialization mode to one of the
The C0LOPT register holds the contents of the THL element indicated by the value of the LOPT pointer minus 1. By
The TGPT pointer is utilized as a read pointer that reads a recorded message buffer number from the THL. This
If the value of the TGPT pointer matches the value of the LOPT pointer, the C0TGPT.THPM bit (transmit history list
If the LOPT pointer is incremented and matches the value of the TGPT pointer minus 1, the TOVF bit (transmit history
Caution Even if the transmit history list overflows (C0TGPT.TOVF bit = 1), the transmit history can be read
until no more history is left unread and the C0TGPT.THPM bit is set (1). However, the TOVF bit is kept
set (1) (= overflow occurs) until cleared (0) by software. In this status, the THPM bit is not cleared (0),
unless the TOVF bit is cleared (0), even if a new transmit history is stored and written to the list. If the
TOVF bit = 1 and the THPM bit = 1 and the receive history list overflows, therefore, the THPM bit
indicates that no more history is left unread even if new history is received and stored.
CHAPTER 20 CAN CONTROLLER
Page 992 of 1509