EZ80F91NA050EC Zilog, EZ80F91NA050EC Datasheet - Page 135

• Manufacturer Part Number: EZ80F91NA050EC
• Description: IC ACCLAIM MCU 256KB 144-BGA
• Manufacturer: Zilog
• Series: eZ80® Acclaim!®r

Specifications of EZ80F91NA050EC

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 50MHz
• Connectivity: Ethernet, I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 144-LBGA
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 16 bit
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• For Use With: 269-4712 - KIT DEV ENCORE 32 SERIES269-4671 - BOARD ZDOTS SBC Z80ACCLAIM PLUS269-4561 - KIT DEV FOR EZ80F91 W/C-COMPILER269-4560 - KIT DEV FOR EZ80F91 W/C-COMPILER
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: No
• Other names: 269-3250

Break Point Halting
PS019215-0910
TMR3_CTL Write
(Timer Enable)
System Clock
Clock Enable
Specialty Timer Modes
Timer Out
Timer Out
T3 Count
(internal)
(at pad)
Table 52. Example: PRT Timer Out Parameters
When the eZ80F91 device is running in DEBUG mode, encountering a break point causes
all CPU functions to halt. However, the timers keep running. This instance makes debug-
ging timer-related software much more difficult. Therefore, the control
register contains a BRK_STP bit. Setting this bit causes the count value to be held during
debug break points.
The features described above are common to all timers in the eZ80F91 device. In addition
to these common features, some of the timers have additional functionality.
The following is a list of the special features for each timer:
Parameter
Timer Enable
Reload
Prescaler Divider = 4
CONTINUOUS Mode
Timer Reload Value
Figure 29. Example: PRT Timer Output Operation
0
4
3
Control Register(s)
TMR
TMR
TMR
TMR
{TMR
x
x
x
x
x
_CTL[TIM_EN]
_CTL[RLD]
_CTL[CLK_DIV]
_CTL[TIM_CONT]
_RR_H, TMRx_RR_L}
2
1
4
3
Programmable Reload Timers
Value
1
1
00b
1
0003h
Product Specification
2
eZ80F91 MCU
1
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