參數(shù)資料
型號(hào): MC68334GCEH16
廠商: Freescale Semiconductor
文件頁(yè)數(shù): 72/76頁(yè)
文件大?。?/td> 0K
描述: IC MCU 16MHZ 2K RAM 132-PQFP
標(biāo)準(zhǔn)包裝: 36
系列: M683xx
核心處理器: CPU32
芯體尺寸: 32-位
速度: 16MHz
連通性: EBI/EMI,UART/USART
輸入/輸出數(shù): 47
程序存儲(chǔ)器類型: ROMless
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x8/10b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 132-BQFP 緩沖式
包裝: 托盤
MC68334
74
MC68334TS/D REV. 1
Test mode functions in conjunction with the SIM test functions. Test mode is used during factory
test of the MCU.
Writing the STOP bit of TRAMMCR causes the TPURAM module to enter stop mode. The
TPURAM array is disabled (which allows external logic to decode TPURAM addresses, if neces-
sary), but all data is retained. If VDD falls below VSTBY during stop mode, internal circuitry switch-
es to VSTBY, as in standby mode. Stop mode is exited by clearing the STOP bit.
The TPURAM array may be used to emulate the microcode ROM in the TPU module. This pro-
vides a means of developing custom TPU code. The TPU selects TPU emulation mode. While in
TPU emulation mode, the access timing of the TPURAM module matches the timing of the TPU
microinstruction ROM to ensure accurate emulation. Normal accesses via the IMB are inhibited
and the control registers have no effect, allowing external RAM to emulate the TPURAM at the
same addresses.
8 Summary of Changes
This is a partial revision. Most of the publication remains the same, but the following changes were
made to improve it. Typographical errors that do not affect content are not annotated.
Page 2
Ordering Information revised to reflect new quantities, TPU mask options.
Page 7
Address map revised to reflect TPURAM array mapping.
Pages 11-42
Expanded and revised SIM section. Added new information to 3.3 System Clock,
Page 72-74
Revised Standby RAM with TPU Emulation section to include details of array map-
ping to upper half of 2-Kbyte address block.
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參數(shù)描述
MC68334GCEH16 制造商:Freescale Semiconductor 功能描述:Microcontroller
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