参数资料
型号: MC68HC05C8AFB
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封装: QFP-44
文件页数: 165/166页
文件大小: 1914K
代理商: MC68HC05C8AFB
Operating Modes
Technical Data
MC68HC05C8A MC68HCL05C8A MC68HSC05C8A — Rev. 5.0
98
Operating Modes
MOTOROLA
11.3 User Mode
In user 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 input-only
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. User
mode is entered on the rising edge of RESET if the IRQ pin is within
normal operating range.
Figure 11-1. User Mode Pinout
1
2
3
4
5
6
7
8
9
10
11
12
13
14
27
28
29
30
31
32
33
34
35
36
37
38
39
40
VDD
OSC1
OSC2
TCAP
PD7
PD6/TCMP
PD5/SS
PD4/SCK
PD3/MOSI
PD2/MISO
PD1/TDO
PD0/RDI
PC0
PC1
RESET
IRQ
NC
PA7
PA5
PA4
PA3
PA2
PA1
PA0
PB0
PB1
PB2
PA6
15
16
17
18
19
20
PB4
PB5
PB6
PB7
VSS
PB3
21
22
23
24
25
26
PC2
PC3
PC4
PC5
PC6
PC7
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