參數(shù)資料
型號(hào): MC68HC705CT4FB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.048 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 99/152頁
文件大?。?/td> 964K
代理商: MC68HC705CT4FB
NON-DISCLOSURE
AGREEMENT
REQUIRED
Operating Modes
General Release Specification
MC68HC705CT4 Rev. 2.0
50
Operating Modes
MOTOROLA
6.3 Single-Chip Mode
In single-chip mode, the address and data buses are not available
externally, but there are three 8-bit input/output (I/O) ports and one 7-bit
I/O port. This mode allows the MCU to function as a self-contained
microcontroller, with maximum use of the pins for on-chip peripheral
functions. All address and data activity occurs within the MCU. Single-
chip mode is entered on the rising edge of RESET if the IRQ/VPP pin is
within normal operating range.
Figure 6-1. Single-Chip Mode Pinout of the MC68HC705CT4
34
39
PC1
PC2
PC3
PC4
PC5
PC6
PC7/PWM
OSC2
OSC1
PD3/CMP2–
29
PD2/CMP12+
7
12
PA3
PA2
PA1
PA0
PB0
PB1
PB2
PB3
PB4
17
PB5
PB6
18
23
28
640
1
RESET
IRQ
/V
PP
PA4
PA5
PA7
V
SS
V
DD
PD6/TCMP
PD5/SCK
PA6
PD1/CMP1–
PD0/CMP3+
V
SS2
FinR
PDoutR
PB7
PDouT
V
DD2
PD4/SDIO
PC0
TCAP
FinT
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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